{"id":587,"date":"2023-03-09T08:58:36","date_gmt":"2023-03-09T08:58:36","guid":{"rendered":"https:\/\/vtechsolutions.vn\/blog\/?p=587"},"modified":"2023-10-17T12:54:35","modified_gmt":"2023-10-17T12:54:35","slug":"chuyen-mach-switch-poe-la-gi","status":"publish","type":"post","link":"https:\/\/vtechsolutions.vn\/blog\/chuyen-mach-switch-poe-la-gi\/","title":{"rendered":"Chuy\u1ec3n m\u1ea1ch Switch POE l\u00e0 g\u00ec? \u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Switch POE"},"content":{"rendered":"<p>Tr\u01b0\u1edbc khi Switch PoE ra \u0111\u1eddi, c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng l\u1edbn lu\u00f4n ph\u1ea3i s\u1eed d\u1ee5ng nhi\u1ec1u d\u00e2y v\u00e0 b\u1ed9 k\u1ebft n\u1ed1i ph\u1ee9c t\u1ea1p. Chuy\u1ec3n m\u1ea1ch Switch PoE gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c k\u1ebft n\u1ed1i m\u1ea1ng n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t ph\u1ed5 bi\u1ebfn hi\u1ec7n nay. <a href=\"https:\/\/vtechsolutions.vn\/blog\/chuyen-mach-switch-poe-la-gi\/\">Chi ti\u1ebft chuy\u1ec3n m\u1ea1ch PoE l\u00e0 g\u00ec?<\/a> \u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a Switch PoE h\u00e3y c\u00f9ng VTech t\u00ecm hi\u1ec3u ngay nh\u00e9.<\/p>\n<div id=\"toc_container\" class=\"toc_light_blue no_bullets\"><p class=\"toc_title\">T&oacute;m t\u1eaft n\u1ed9i dung<\/p><ul class=\"toc_list\"><li><a href=\"#1_Chuyen_mach_Switch_PoE_la_gi\">1\/ Chuy\u1ec3n m\u1ea1ch Switch PoE l\u00e0 g\u00ec?<\/a><\/li><li><a href=\"#2_Uu_va_nhuoc_diem_cua_Chuyen_mach_Switch_PoE\">2\/ \u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Chuy\u1ec3n m\u1ea1ch Switch PoE<\/a><ul><li><a href=\"#21_Uu_diem_cua_Switch_PoE\">2.1\/ \u01afu \u0111i\u1ec3m c\u1ee7a Switch PoE<\/a><\/li><li><a href=\"#22_Nhuoc_diem_cua_Switch_PoE\">2.2\/ Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Switch PoE<\/a><\/li><\/ul><\/li><li><a href=\"#3_Tai_sao_nen_su_dung_Switch_PoE_thay_vi_Switch_thuong_trong_he_thong_mang\">3\/ T\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng Switch PoE thay v\u00ec Switch th\u01b0\u1eddng trong h\u1ec7 th\u1ed1ng m\u1ea1ng<\/a><\/li><li><a href=\"#4_Khi_nao_ban_nen_trang_bi_Switch_PoE\">4\/ Khi n\u00e0o b\u1ea1n n\u00ean trang b\u1ecb Switch PoE?<\/a><\/li><li><a href=\"#5_Cac_chuan_cong_nghe_bo_chuyen_mach_Switch_PoE\">5\/ C\u00e1c chu\u1ea9n c\u00f4ng ngh\u1ec7 b\u1ed9 chuy\u1ec3n m\u1ea1ch Switch PoE<\/a><\/li><\/ul><\/div>\n<h2><span id=\"1_Chuyen_mach_Switch_PoE_la_gi\">1\/ Chuy\u1ec3n m\u1ea1ch Switch PoE l\u00e0 g\u00ec?<\/span><\/h2>\n<p>PoE l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a c\u1ee5m t\u1eeb Power over Ethernet, ngh\u0129a l\u00e0 kh\u1ea3 n\u0103ng truy\u1ec1n t\u1ea3i d\u00f2ng \u0111i\u1ec7n th\u00f4ng qua c\u00e1p k\u1ebft n\u1ed1i m\u1ea1ng Ethernet. Switch PoE c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Switch c\u1ea5p ngu\u1ed3n PoE hay chuy\u1ec3n m\u1ea1ch PoE. \u0110\u00e2y l\u00e0 c\u00f4ng ngh\u1ec7 k\u1ebft h\u1ee3p truy\u1ec1n \u0111i\u1ec7n n\u0103ng ngu\u1ed3n v\u00e0 d\u1eef li\u1ec7u m\u1ea1ng \u0111\u1ed3ng th\u1eddi tr\u00ean d\u00e2y c\u00e1p duy nh\u1ea5t thay v\u00ec 2 d\u00e2y \u0111\u1ed9c l\u1eadp nh\u01b0 b\u00ecnh th\u01b0\u1eddng. C\u00e1p c\u1ee7a Switch PoE s\u1eed d\u1ee5ng l\u00e0 Cable RJ45, k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi c\u1ed5ng Ethernet c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng.<\/p>\n<p>RJ45 kh\u00e1c v\u1edbi Cable m\u1ea1ng th\u00f4ng th\u01b0\u1eddng l\u00e0 c\u00f3 8 l\u00f5i b\u00ean trong. Trong \u0111\u00f3 4 l\u00f5i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n &#8211; nh\u1eadn d\u1eef li\u1ec7u gi\u1ed1ng nh\u01b0 c\u00e1p m\u1ea1ng b\u00ecnh th\u01b0\u1eddng. 4 l\u00f5i c\u00f2n l\u1ea1i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 c\u1ea5p ngu\u1ed3n PoE cho thi\u1ebft b\u1ecb m\u1ea1ng. Ngo\u00e0i ra m\u1ed9t s\u1ed1 lo\u1ea1i cable RJ45 c\u1ea3i ti\u1ebfn c\u00f3 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng cho c\u00e1c m\u1ee5c \u0111\u00edch kh\u00e1c.<\/p>\n<figure id=\"attachment_701\" aria-describedby=\"caption-attachment-701\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-701\" src=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/bo-chuyen-mach-switch-poe.jpg\" alt=\"b\u1ed9 chuy\u1ec3n m\u1ea1ch Switch POE\" width=\"800\" height=\"376\" srcset=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/bo-chuyen-mach-switch-poe.jpg 758w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/bo-chuyen-mach-switch-poe-300x141.jpg 300w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-701\" class=\"wp-caption-text\">B\u1ed9 chuy\u1ec3n m\u1ea1ch Switch POE l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<h2><span id=\"2_Uu_va_nhuoc_diem_cua_Chuyen_mach_Switch_PoE\">2\/ \u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Chuy\u1ec3n m\u1ea1ch Switch PoE<\/span><\/h2>\n<p>C\u00f4ng ngh\u1ec7 chuy\u1ec3n m\u1ea1ch Switch PoE c\u00f3 nh\u1eefng \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m ri\u00eang nh\u01b0ng kh\u00f4ng th\u1ec3 ph\u1ee7 nh\u1eadn vai tr\u00f2 c\u1ee7a n\u00f3 trong h\u1ec7 th\u1ed1ng m\u1ea1ng hi\u1ec7n \u0111\u1ea1i. Chi ti\u1ebft \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Switch PoE h\u00e3y c\u00f9ng VTech ph\u00e2n t\u00edch d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n<h3><span id=\"21_Uu_diem_cua_Switch_PoE\">2.1\/ \u01afu \u0111i\u1ec3m c\u1ee7a Switch PoE<\/span><\/h3>\n<p>C\u00f4ng ngh\u1ec7 chuy\u1ec3n m\u1ea1ch Switch PoE v\u1edbi kh\u1ea3 n\u0103ng k\u1ebft h\u1ee3p truy\u1ec1n t\u1ea3i \u0111i\u1ec7n v\u00e0 m\u1ea1ng tr\u00ean c\u00f9ng 1 d\u00e2y c\u00e1p c\u00f3 nhi\u1ec1u \u01b0u \u0111i\u1ec3m nh\u01b0:<\/p>\n<ul>\n<li><strong>T\u00ednh linh ho\u1ea1t cao:<\/strong> S\u1eed d\u1ee5ng chuy\u1ec3n m\u1ea1ch Switch PoE th\u00f4ng qua d\u00e2y c\u00e1p chuy\u00ean bi\u1ec7t kh\u00f4ng c\u1ea7n d\u00e2y cung c\u1ea5p ngu\u1ed3n \u0111i\u1ec7n kh\u00e1c cho thi\u1ebft b\u1ecb m\u1ea1ng. V\u00ec v\u1eady m\u00e0 thi\u1ebft b\u1ecb Switch PoE c\u00f3 th\u1ec3 l\u1eafp \u0111\u1eb7t \u1edf b\u1ea5t c\u1ee9 v\u1ecb tr\u00ed n\u00e0o kh\u00f4ng b\u1ecb gi\u1edbi h\u1ea1n \u1edf khu v\u1ef1c g\u1ea7n \u1ed5 c\u1eafm \u0111i\u1ec7n. \u01afu \u0111i\u1ec3m n\u00e0y r\u1ea5t th\u00edch h\u1ee3p cho c\u00e1c thi\u1ebft b\u1ecb gi\u00e1m s\u00e1t, Camera IP, Camera an ninh, h\u1ec7 th\u1ed1ng loa th\u00f4ng b\u00e1o IP,&#8230;<\/li>\n<li><strong>T\u01b0\u01a1ng lai x\u00e2y d\u1ef1ng m\u00f4i tr\u01b0\u1eddng m\u1ea1ng kh\u00f4ng cable:<\/strong> C\u00e1c nh\u00e0 c\u00f4ng ngh\u1ec7 \u0111ang h\u01b0\u1edbng \u0111\u1ebfn vi\u1ec7c x\u00e2y d\u1ef1ng m\u00f4i tr\u01b0\u1eddng m\u1ea1ng kh\u00f4ng cable v\u1edbi ho\u00e0n to\u00e0n l\u00e0 k\u1ebft n\u1ed1i kh\u00f4ng d\u00e2y. \u0110\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y th\u00ec Switch PoE l\u00e0 m\u1ed9t b\u01b0\u1edbc ti\u1ebfn quan tr\u1ecdng. Khi c\u00f4ng ngh\u1ec7 Switch PoE k\u1ebft h\u1ee3p v\u1edbi Wireless ho\u00e0n th\u00e0nh, con ng\u01b0\u1eddi c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u00f4i tr\u01b0\u1eddng m\u1ea1ng ho\u00e0n to\u00e0n kh\u00f4ng c\u00f3 cable.<\/li>\n<li><strong>\u0110\u01a1n gi\u1ea3n h\u00f3a h\u1ec7 th\u1ed1ng m\u1ea1ng:<\/strong> S\u1eed d\u1ee5ng k\u1ebft n\u1ed1i Switch PoE gi\u00fap gi\u1ea3m m\u1ed9t n\u1eeda d\u00e2y k\u1ebft n\u1ed1i trong h\u1ec7 th\u1ed1ng v\u00ec lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n d\u00e2y ngu\u1ed3n c\u1ee7a m\u1ed7i thi\u1ebft b\u1ecb m\u1ea1ng. Do v\u1eady vi\u1ec7c x\u00e2y d\u1ef1ng v\u00e0 tri\u1ec3n khai h\u1ec7 th\u1ed1ng m\u1ea1ng c\u0169ng d\u1ec5 d\u00e0ng h\u01a1n.<\/li>\n<li><strong>Ti\u1ebft ki\u1ec7m chi ph\u00ed<\/strong>: S\u1eed d\u1ee5ng chuy\u1ec3n m\u1ea1ch Switch PoE gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed \u0111\u00e1ng k\u1ec3 khi kh\u00f4ng c\u1ea7n mua v\u00e0 l\u1eafp \u0111\u1eb7t c\u00e1c d\u00e2y \u0111i\u1ec7n, \u1ed5 c\u1eafm ngu\u1ed3n. Ngo\u00e0i ra vi\u1ec7c b\u1ea3o tr\u00ec b\u1ea3o d\u01b0\u1ee1ng c\u0169ng d\u1ec5 d\u00e0ng h\u01a1n, ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 c\u00f4ng s\u1ee9c.<\/li>\n<li><strong>D\u1ec5 d\u00e0ng qu\u1ea3n l\u00fd:<\/strong> C\u00e1c thi\u1ebft b\u1ecb <strong>chuy\u1ec3n m\u1ea1ch PoE<\/strong> hi\u1ec7n \u0111\u1ea1i c\u00f2n cho ph\u00e9p qu\u1ea3n l\u00fd m\u1ea1ng qua giao th\u1ee9c SNMP \u0111\u01a1n gi\u1ea3n. Nh\u1edd v\u1eady m\u00e0 vi\u1ec7c qu\u1ea3n tr\u1ecb, gi\u00e1m s\u00e1t truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb trong h\u1ec7 th\u1ed1ng m\u1ea1ng tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n.<\/li>\n<\/ul>\n<figure id=\"attachment_696\" aria-describedby=\"caption-attachment-696\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-696\" src=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/uu-diem-cua-bo-chuyen-mach-switch-poe.jpg\" alt=\"\u01afu \u0111i\u1ec3m c\u1ee7a b\u1ed9 chuy\u1ec3n m\u1ea1ch S\u01a1 \u0111\u1ed3 h\u1ec7 th\u1ed1ng m\u1ea1ng c\u00f3 chuy\u1ec3n m\u1ea1ch Switch POE\" width=\"800\" height=\"520\" srcset=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/uu-diem-cua-bo-chuyen-mach-switch-poe.jpg 800w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/uu-diem-cua-bo-chuyen-mach-switch-poe-300x195.jpg 300w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/uu-diem-cua-bo-chuyen-mach-switch-poe-768x499.jpg 768w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/uu-diem-cua-bo-chuyen-mach-switch-poe-370x241.jpg 370w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-696\" class=\"wp-caption-text\">\u01afu \u0111i\u1ec3m c\u1ee7a b\u1ed9 chuy\u1ec3n m\u1ea1ch Switch POE<\/figcaption><\/figure>\n<h3><span id=\"22_Nhuoc_diem_cua_Switch_PoE\">2.2\/ Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Switch PoE<\/span><\/h3>\n<p>B\u00ean c\u1ea1nh nh\u1eefng \u01b0u \u0111i\u1ec3m tr\u00ean th\u00ec chuy\u1ec3n m\u1ea1ch PoE c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 nh\u01b0\u1ee3c \u0111i\u1ec3m \u0111ang \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 c\u00f4ng ngh\u1ec7 t\u00ecm c\u00e1ch kh\u1eafc ph\u1ee5c.<\/p>\n<ul>\n<li><strong>C\u1ea7n cable chuy\u00ean d\u1ee5ng:<\/strong> Switch PoE c\u00f3 th\u1ec3 truy\u1ec1n t\u1ea3i m\u1ea1ng v\u00e0 ngu\u1ed3n \u0111i\u1ec7n k\u1ebft h\u1ee3p v\u1edbi nhau nh\u01b0ng ph\u1ea3i th\u00f4ng qua cable m\u1ea1ng chuy\u00ean d\u1ee5ng l\u00e0 RJ45. H\u1ea7u h\u1ebft m\u1ecdi ng\u01b0\u1eddi hi\u1ec7n nay quen s\u1eed d\u1ee5ng cable m\u1ea1ng b\u00ecnh th\u01b0\u1eddng h\u01a1n, gi\u00e1 th\u00e0nh c\u0169ng r\u1ebb h\u01a1n so v\u1edbi RJ45. Ng\u01b0\u1eddi d\u00f9ng Switch PoE s\u1ebd ph\u1ea3i mua lo\u1ea1i cable s\u1eed d\u1ee5ng ri\u00eang, kh\u00f3 t\u00ecm mua, gi\u00e1 th\u00e0nh cao v\u00e0 \u00edt l\u1ef1a ch\u1ecdn h\u01a1n. Tuy nhi\u00ean nh\u01b0\u1ee3c \u0111i\u1ec3m n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c kh\u1eafc ph\u1ee5c khi h\u1ec7 th\u1ed1ng m\u1ea1ng d\u00f9ng Switch PoE tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn.<\/li>\n<li><strong>Gi\u1edbi h\u1ea1n kho\u1ea3ng c\u00e1ch:<\/strong> Hi\u1ec7n nay cable m\u1ea1ng <strong>chuy\u1ec3n m\u1ea1ch PoE<\/strong> ch\u1ec9 c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb trong ph\u1ea1m vi b\u00e1n k\u00ednh d\u01b0\u1edbi 100 m\u00e9t. N\u1ebfu nh\u01b0 v\u01b0\u1ee3t qu\u00e1 kho\u1ea3ng c\u00e1ch n\u00e0y cable m\u1ea1ng kh\u00f4ng \u0111\u1ee7 kh\u1ea3 n\u0103ng truy\u1ec1n t\u1ea3i d\u00f2ng \u0111i\u1ec7n cho thi\u1ebft b\u1ecb m\u1ea1ng ho\u1ea1t \u0111\u1ed9ng. Ngo\u00e0i ra kho\u1ea3ng c\u00e1ch c\u00e0ng xa th\u00ec t\u1ed1c \u0111\u1ed9 v\u00e0 hi\u1ec7u qu\u1ea3 truy\u1ec1n tin c\u0169ng c\u00e0ng b\u1ecb \u1ea3nh h\u01b0\u1edfng.<\/li>\n<li><strong>Gi\u1edbi h\u1ea1n thi\u1ebft b\u1ecb m\u1ea1ng s\u1eed d\u1ee5ng:<\/strong> C\u00f4ng ngh\u1ec7 Switch PoE hi\u1ec7n t\u1ea1i ch\u1ec9 cho ph\u00e9p truy\u1ec1n d\u00f2ng \u0111i\u1ec7n th\u1ea5p c\u00f9ng v\u1edbi d\u1eef li\u1ec7u m\u1ea1ng tr\u00ean c\u00f9ng 1 d\u00e2y c\u00e1p. Do v\u1eady h\u1ec7 chuy\u1ec3n m\u1ea1ch n\u00e0y ch\u1ec9 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c thi\u1ebft b\u1ecb s\u1eed d\u1ee5ng d\u00f2ng \u0111i\u1ec7n nh\u1ecf, ti\u00eau th\u1ee5 \u00edt \u0111i\u1ec7n n\u0103ng. \u0110i\u1ec3n h\u00ecnh l\u00e0 c\u00e1c thi\u1ebft b\u1ecb Camera IP, loa IP, \u0111i\u1ec7n tho\u1ea1i IP,&#8230; trong h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t. C\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng ph\u1ed5 bi\u1ebfn h\u01a1n nh\u01b0 laptop, m\u00e1y t\u00ednh b\u1ea3ng, PC,&#8230; v\u1eabn ch\u01b0a th\u1ec3 s\u1eed d\u1ee5ng chuy\u1ec3n m\u1ea1ch Switch PoE. C\u00e1c nh\u00e0 c\u00f4ng ngh\u1ec7 v\u1eabn ti\u1ebfp t\u1ee5c nghi\u00ean c\u1ee9u, n\u00e2ng c\u1ea5p d\u00e2y cable \u0111\u1ec3 kh\u1eafc ph\u1ee5c nh\u01b0\u1ee3c \u0111i\u1ec3m n\u00e0y.<\/li>\n<li><strong>C\u1ea7n \u0111\u1ea7u t\u01b0 h\u1ec7 th\u1ed1ng m\u1ea1ng m\u1edbi:<\/strong> V\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng b\u00ecnh th\u01b0\u1eddng n\u1ebfu chuy\u1ec3n \u0111\u1ed5i th\u00e0nh h\u1ec7 th\u1ed1ng m\u1ea1ng Switch PoE th\u00ec c\u1ea7n \u0111\u1ea7u t\u01b0 thi\u1ebft b\u1ecb chuy\u00ean d\u1ee5ng. C\u1ee5 th\u1ebb l\u00e0 c\u00e1c Switch PoE, \u0111\u1ea7u ghi h\u00ecnh, camera,&#8230; h\u1ed7 tr\u1ee3 c\u00f4ng ngh\u1ec7 PoE. Do c\u00f4ng ngh\u1ec7 n\u00e0y hi\u1ec7n nay ch\u01b0a ph\u1ed5 bi\u1ebf n\u00ean gi\u00e1 th\u00e0nh thi\u1ebft b\u1ecb PoE c\u0169ng cao h\u01a1n so v\u1edbi b\u00ecnh th\u01b0\u1eddng.<\/li>\n<\/ul>\n<h2><span id=\"3_Tai_sao_nen_su_dung_Switch_PoE_thay_vi_Switch_thuong_trong_he_thong_mang\">3\/ T\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng Switch PoE thay v\u00ec Switch th\u01b0\u1eddng trong h\u1ec7 th\u1ed1ng m\u1ea1ng<\/span><\/h2>\n<p>C\u00e1c thi\u1ebft b\u1ecb trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u0111\u1ec1u ph\u1ea3i s\u1eed d\u1ee5ng ngu\u1ed3n \u0111i\u1ec7n \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng. Ngo\u00e0i ra c\u0169ng c\u1ea7n k\u1ebft n\u1ed1i m\u1ea1ng \u0111\u1ec3 trao \u0111\u1ed5i, truy\u1ec1n nh\u1eadn d\u1eef li\u1ec7u li\u00ean t\u1ee5c.<\/p>\n<p>V\u1edbi h\u1ec7 th\u1ed1ng m\u1ea1ng s\u1eed d\u1ee5ng Switch th\u01b0\u1eddng th\u00ec c\u1ea7n c\u1ea3 d\u00e2y c\u00e1p \u0111\u1ec3 truy\u1ec1n t\u1ea3i m\u1ea1ng l\u1eabn d\u00e2y ngu\u1ed3n \u0111\u1ec3 cung c\u1ea5p \u0111i\u1ec7n. \u0110i\u1ec1u n\u00e0y g\u00e2y kh\u00f3 kh\u0103n cho vi\u1ec7c l\u1eafp \u0111\u1eb7t thi\u1ebft b\u1ecb m\u1ea1ng \u1edf nh\u1eefng n\u01a1i kh\u00f4ng c\u00f3 s\u1eb5n \u1ed5 c\u1eafm \u0111i\u1ec7n. Ngo\u00e0i ra vi\u1ec7c c\u00e0i \u0111\u1eb7t s\u1eed d\u1ee5ng c\u00e1c Camera IP, \u0111i\u1ec7n tho\u1ea1i IP, AP,&#8230; \u1edf khu v\u1ef1c ngo\u00e0i tr\u1eddi, xa ngu\u1ed3n \u0111i\u1ec7n, kh\u00f3 ti\u1ebfp c\u1eadn c\u0169ng tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p, kh\u00f3 kh\u0103n h\u01a1n.<\/p>\n<figure id=\"attachment_697\" aria-describedby=\"caption-attachment-697\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-697\" src=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/tai-sao-nen-su-dung-switch-poe.jpg\" alt=\"t\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng b\u1ed9 chuy\u1ec3n m\u1ea1ch Switch POE\" width=\"800\" height=\"419\" srcset=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/tai-sao-nen-su-dung-switch-poe.jpg 900w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/tai-sao-nen-su-dung-switch-poe-300x157.jpg 300w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/tai-sao-nen-su-dung-switch-poe-768x402.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-697\" class=\"wp-caption-text\">Chuy\u1ec3n m\u1ea1ch PoE hi\u1ec7n nay ch\u1ee7 y\u1ebfu d\u00f9ng trong h\u1ec7 th\u1ed1ng Camera IP<\/figcaption><\/figure>\n<p>Switch PoE gi\u00fap gi\u1ea3i quy\u1ebft to\u00e0n b\u1ed9 nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y, gi\u00fap b\u1ea1n tri\u1ec3n khai thi\u1ebft b\u1ecb m\u1ea1ng \u0111\u1ebfn b\u1ea5t c\u1ee9 n\u01a1i n\u00e0o mong mu\u1ed1n. Chuy\u1ec3n m\u1ea1ch Switch PoE c\u0169ng gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a, gi\u1ea3m chi ph\u00ed cho c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng hi\u1ec7n \u0111\u1ea1i. V\u00ec v\u1eady hi\u1ec7n nay vi\u1ec7c s\u1eed d\u1ee5ng Switch PoE trong h\u1ec7 th\u1ed1ng m\u1ea1ng ng\u00e0y c\u00e0ng ph\u1ed5 bi\u1ebfn.<\/p>\n<p>\u0110i\u1ec3n h\u00ecnh c\u00e1c thi\u1ebft b\u1ecb v\u00e0 h\u1ec7 th\u1ed1ng \u1ee9ng d\u1ee5ng chuy\u1ec3n m\u1ea1ch PoE nh\u01b0: h\u1ec7 th\u1ed1ng b\u00e1o ch\u00e1y, h\u1ec7 th\u1ed1ng ch\u1ed1ng tr\u1ed9m, h\u1ec7 th\u1ed1ng thi\u1ebft b\u1ecb nh\u00e0 th\u00f4ng minh, h\u1ec7 th\u1ed1ng camera IP gi\u00e1m s\u00e1t, h\u1ec7 th\u1ed1ng \u0111i\u1ec7n tho\u1ea1i IP,&#8230;<\/p>\n<p>So v\u1edbi Switch th\u00f4ng th\u01b0\u1eddng, Switch PoE s\u1ebd ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1edd nhi\u1ec1u t\u00ednh n\u0103ng nh\u01b0:<\/p>\n<ul>\n<li>\u0110\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng truy\u1ec1n d\u1eabn li\u00ean t\u1ee5c, h\u1ea1n ch\u1ebf c\u00e1c nguy\u00ean nh\u00e2n g\u00e2y gi\u00e1n \u0111o\u1ea1n trong truy\u1ec1n d\u1eabn.<\/li>\n<li>Kh\u1ea3 n\u0103ng c\u1ea5p ngu\u1ed3n ch\u00ednh x\u00e1c: Switch PoE c\u00f3 kh\u1ea3 n\u0103ng cung c\u1ea5p ngu\u1ed3n \u0111i\u1ec7n ti\u00eau th\u1ee5 \u0111\u1ee7 cho t\u1eebng thi\u1ebft b\u1ecb kh\u00e1c trong h\u1ec7 th\u1ed1ng. \u0110\u00e2y l\u00e0 gi\u1ea3i ph\u00e1p c\u1ea5p ngu\u1ed3n \u0111i\u1ec7n hi\u1ec7u qu\u1ea3 nh\u1ea5t cho c\u00e1c h\u1ec7 th\u1ed1ng Camera IP hi\u1ec7n nay, m\u1edf r\u1ed9ng sang nhi\u1ec1u h\u1ec7 th\u1ed1ng m\u1ea1ng kh\u00e1c trong t\u01b0\u01a1ng lai.<\/li>\n<li>T\u00ednh n\u0103ng b\u1ea3o m\u1eadt cao: Switch PoE b\u1ea3o m\u1eadt d\u1eef li\u1ec7u th\u00f4ng qua ph\u01b0\u01a1ng th\u1ee9c g\u00e1n IP, truy\u1ec1n nh\u1eadn d\u1eef li\u1ec7u ch\u00ednh x\u00e1c. Vi\u1ec7c truy c\u1eadp d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c gi\u00e1m s\u00e1t d\u1ec5 d\u00e0ng h\u01a1n.<\/li>\n<li>T\u00ednh n\u0103ng an to\u00e0n: ch\u1ed1ng s\u00e9t l\u00e0 t\u00ednh n\u1eafng m\u1edbi c\u00f3 c\u1ee7a c\u00f4ng ngh\u1ec7 Switch PoE, gi\u00fap b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb kh\u1ecfi nguy c\u01a1 h\u1ecfng h\u00f3c do s\u00e9t \u0111\u00e1nh trong \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft b\u1ea5t l\u1ee3i.<\/li>\n<\/ul>\n<p><strong>&gt;&gt;&gt; Tham kh\u1ea3o th\u00eam th\u00f4ng tin v\u1ec1<\/strong> <strong><a href=\"https:\/\/vtechsolutions.vn\/blog\/chuyen-mach-switch-layer-2-la-gi\/\">Chuy\u1ec3n m\u1ea1ch switch layer 2<\/a> v\u00e0 <a href=\"https:\/\/vtechsolutions.vn\/blog\/chuyen-mach-switch-layer-3-la-gi\/\">Chuy\u1ec3n m\u1ea1ch switch layer 3<\/a><\/strong><\/p>\n<h2><span id=\"4_Khi_nao_ban_nen_trang_bi_Switch_PoE\">4\/ Khi n\u00e0o b\u1ea1n n\u00ean trang b\u1ecb Switch PoE?<\/span><\/h2>\n<p><strong>Chuy\u1ec3n m\u1ea1ch PoE<\/strong> \u0111ang ph\u00e1t tri\u1ec3n m\u1ea1nh m\u1ebd v\u00e0 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng ng\u00e0y c\u00e0ng r\u1ed9ng r\u00e3i trong h\u1ec7 th\u1ed1ng m\u1ea1ng c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c nhau. T\u01b0\u01a1ng lai c\u00f4ng ngh\u1ec7 n\u00e0y s\u1ebd ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, c\u00f3 kh\u1ea3 n\u0103ng thay th\u1ebf h\u1ec7 th\u1ed1ng m\u1ea1ng cable truy\u1ec1n th\u1ed1ng. C\u00e1c l\u0129nh v\u1ef1c th\u01b0\u1eddng \u1ee9ng d\u1ee5ng Switch PoE hi\u1ec7n nay nh\u01b0: l\u0129nh v\u1ef1c ch\u1ed1ng tr\u1ed9m, h\u1ec7 th\u1ed1ng b\u00e1o ch\u00e1y, chu\u00f4ng c\u1eeda m\u00e0n h\u00ecnh,&#8230; Trong \u0111\u00f3 h\u1ec7 th\u1ed1ng Camera IP gi\u00e1m s\u00e1t l\u00e0 \u1ee9ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh nh\u1ea5t c\u1ee7a Switch PoE.<\/p>\n<figure id=\"attachment_699\" aria-describedby=\"caption-attachment-699\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-699\" src=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/he-thong-mang-switch-poe-1024x512.jpg\" alt=\"H\u1ec7 th\u1ed1ng m\u1ea1ng Switch POE\" width=\"900\" height=\"450\" srcset=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/he-thong-mang-switch-poe-1024x512.jpg 1024w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/he-thong-mang-switch-poe-300x150.jpg 300w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/he-thong-mang-switch-poe-768x384.jpg 768w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/he-thong-mang-switch-poe.jpg 1099w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><figcaption id=\"caption-attachment-699\" class=\"wp-caption-text\">Switch PoE ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i<\/figcaption><\/figure>\n<p>Khi b\u1ea1n c\u1ea7n l\u1eafp \u0111\u1eb7t Camera IP ho\u1eb7c c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng \u1edf v\u1ecb tr\u00ed xa ngu\u1ed3n \u0111i\u1ec7n, c\u00f3 th\u1ec3 l\u00e0 ngo\u00e0i tr\u1eddi ho\u1eb7c tr\u00ean cao th\u00ec s\u1eed d\u1ee5ng Switch PoE l\u00e0 gi\u1ea3i ph\u00e1p t\u1ed1t nh\u1ea5t. H\u1ea7u h\u1ebft c\u00e1c d\u00f2ng Camera IP hi\u1ec7n nay \u0111\u1ec1u h\u1ed7 tr\u1ee3 c\u00f4ng ngh\u1ec7 Switch PoE. Ch\u1ec9 c\u1ea7n 1 d\u00e2y cable k\u1ebft n\u1ed1i \u0111\u1ec3 cung c\u1ea5p ngu\u1ed3n \u0111i\u1ec7n v\u00e0 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u, Camera IP c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t \u1edf b\u1ea5t c\u1ee9 \u0111\u00e2u. Vi\u1ec7c gi\u00e1m s\u00e1t h\u00ecnh \u1ea3nh, \u0111\u1ea3m b\u1ea3o an ninh c\u0169ng tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n<p>\u1ede c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c c\u0169ng t\u01b0\u01a1ng t\u1ef1, b\u1ea1n c\u00f3 th\u1ec3 trang b\u1ecb Switch PoE khi mu\u1ed1n \u0111\u01a1n gi\u1ea3n h\u00f3a h\u1ec7 th\u1ed1ng m\u1ea1ng. Vi\u1ec7c m\u1edf r\u1ed9ng h\u1ec7 th\u1ed1ng m\u1ea1ng Switch PoE trong t\u01b0\u01a1ng lai c\u0169ng d\u1ec5 d\u00e0ng h\u01a1n khi c\u00f4ng ngh\u1ec7 n\u00e0y \u0111ang ph\u00e1t tri\u1ec3n m\u1ea1nh m\u1ebd v\u00e0 ng\u00e0y c\u00e0ng ph\u1ed5 bi\u1ebfn h\u01a1n.<\/p>\n<h2><span id=\"5_Cac_chuan_cong_nghe_bo_chuyen_mach_Switch_PoE\">5\/ C\u00e1c chu\u1ea9n c\u00f4ng ngh\u1ec7 b\u1ed9 chuy\u1ec3n m\u1ea1ch Switch PoE<\/span><\/h2>\n<p>Hi\u1ec7n nay c\u00f4ng ngh\u1ec7 Switch PoE g\u1ed3m 3 chu\u1ea9n ch\u00ednh l\u00e0: 802.3af, 802.3at, 802.3bt Type 3 v\u00e0 802.3bt Type 4. M\u1ed7i chu\u1ea9n c\u00f4ng ngh\u1ec7 PoE \u0111\u1ec1u cung c\u1ea5p c\u00f4ng su\u1ea5t c\u1ed5ng k\u1ebft n\u1ed1i v\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh ri\u00eang. C\u1ee5 th\u1ec3 nh\u01b0 sau:<\/p>\n<table>\n<tbody>\n<tr>\n<td><b>Thu\u1ed9c t\u00ednh<\/b><\/td>\n<td><b>Chu\u1ea9n PoE 802.3af (802.3at Type 1)<\/b><\/td>\n<td><b>Chu\u1ea9n PoE 802.3at Type 2<\/b><\/td>\n<td><b>Chu\u1ea9n PoE 802.3bt Type 3<\/b><\/td>\n<td><b>Chu\u1ea9n PoE 802.3bt Type 4<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>PoE c\u1ea5p xu\u1ed1ng cho PD<\/b><\/td>\n<td><span style=\"font-weight: 400;\">12.95 W<\/span><\/td>\n<td><span style=\"font-weight: 400;\">25.5 W<\/span><\/td>\n<td><span style=\"font-weight: 400;\">51 W<\/span><\/td>\n<td><span style=\"font-weight: 400;\">71 W<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>PoE t\u1ed1i \u0111a tr\u00ean 1 c\u1ed5ng<\/b><\/td>\n<td><span style=\"font-weight: 400;\">15.4 W<\/span><\/td>\n<td><span style=\"font-weight: 400;\">30 W<\/span><\/td>\n<td><span style=\"font-weight: 400;\">60 W<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100 W<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>D\u1ea3i \u0111i\u1ec7n \u00e1p c\u1ee7a PSE<\/b><\/td>\n<td><span style=\"font-weight: 400;\">44.0\u201357.0 V<\/span><\/td>\n<td><span style=\"font-weight: 400;\">50.0\u201357.0 V<\/span><\/td>\n<td><span style=\"font-weight: 400;\">50.0\u201357.0 V<\/span><\/td>\n<td><span style=\"font-weight: 400;\">52.0\u201357.0 V<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>D\u1ea3i \u0111i\u1ec7n \u00e1p c\u1ee7a PD<\/b><\/td>\n<td><span style=\"font-weight: 400;\">37.0\u201357.0 V<\/span><\/td>\n<td><span style=\"font-weight: 400;\">42.5\u201357.0 V<\/span><\/td>\n<td><span style=\"font-weight: 400;\">42.5\u201357.0 V<\/span><\/td>\n<td><span style=\"font-weight: 400;\">41.1\u201357.0 V<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>C\u00e1c lo\u1ea1i cable h\u1ed7 tr\u1ee3<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Cat 3 v\u00e0 Cat 5, Cat6, Cat7<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Cat 5, Cat6, Cat7<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Cat 5, Cat6, Cat7<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Cat 5, Cat6, Cat7<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>C\u00e1c Mode h\u1ed7 tr\u1ee3<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Mode A v\u00e0 Mode B\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Mode A, Mode B<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Mode A, Mode B, 4-pair Mode<\/span><\/td>\n<td><span style=\"font-weight: 400;\">4-pair Mode<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>M\u1ed7i chu\u1ea9n Switch PoE l\u1ea1i chia th\u00e0nh c\u00e1c Class (t\u1eeb Class 0 \u0111\u1ebfn Class 8) v\u1edbi t\u00ednh n\u0103ng cho ph\u00e9p k\u1ebft n\u1ed1i v\u1edbi thi\u1ebft b\u1ecb c\u00f3 c\u00f4ng su\u1ea5t n gu\u1ed3n \u0111i\u1ec7n kh\u00e1c nhau. Do v\u1eady khi ch\u1ecdn mua thi\u1ebft b\u1ecb c\u00f4ng ngh\u1ec7 PoE, c\u1ea7n l\u01b0u \u00fd \u0111\u1ebfn l\u1ef1a ch\u1ecdn \u0111\u00fang chu\u1ea9n Switch PoE ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng. Th\u00f4ng s\u1ed1 c\u1ea7n l\u01b0u \u00fd bao g\u1ed3m Port h\u1ed7 tr\u1ee3 PoE, c\u00f4ng su\u1ea5t c\u1ee7a Switch PoE, PoE Class,&#8230;<\/p>\n<p>Tr\u00ean \u0111\u00e2y VTech \u0111\u00e3 c\u00f9ng b\u1ea1n \u0111\u1ecdc t\u00ecm hi\u1ec3u <strong>chuy\u1ec3n m\u1ea1ch PoE l\u00e0 g\u00ec<\/strong>, \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a c\u00f4ng ngh\u1ec7 n\u00e0y trong h\u1ec7 th\u1ed1ng m\u1ea1ng hi\u1ec7n \u0111\u1ea1i. N\u1ebfu c\u1ea7n t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 Switch PoE v\u00e0 t\u01b0 v\u1ea5n l\u1eafp \u0111\u1eb7t, h\u00e3y li\u00ean h\u1ec7 v\u1edbi VTech \u0111\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 nh\u00e9.<\/p>\n<p><strong>Tham kh\u1ea3o th\u00eam:<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/vtechsolutions.vn\/blog\/bo-chuyen-mach-switch-la-gi\/\">T\u00ecm hi\u1ec3u v\u1ec1 c\u00e1c lo\u1ea1i Switch v\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ch\u00fang<\/a><\/li>\n<li><a href=\"https:\/\/vtechsolutions.vn\/blog\/so-sanh-chuyen-mach-switch-layer-2-va-chuyen-mach-switch-layer-3\/\">So s\u00e1nh chuy\u1ec3n m\u1ea1ch Switch layer 2 v\u00e0 layer 3<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Tr\u01b0\u1edbc khi Switch PoE ra \u0111\u1eddi, c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng l\u1edbn lu\u00f4n ph\u1ea3i s\u1eed d\u1ee5ng nhi\u1ec1u d\u00e2y v\u00e0 b\u1ed9 k\u1ebft n\u1ed1i ph\u1ee9c t\u1ea1p. Chuy\u1ec3n m\u1ea1ch Switch PoE gi\u00fap \u0111\u01a1n gi\u1ea3n<\/p>\n","protected":false},"author":1,"featured_media":698,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[181,5],"tags":[],"class_list":["post-587","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-he-thong-thiet-bi-mang","category-tin-tuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Chuy\u1ec3n m\u1ea1ch Switch POE l\u00e0 g\u00ec? \u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Switch POE<\/title>\n<meta name=\"description\" content=\"Chuy\u1ec3n m\u1ea1ch PoE l\u00e0 g\u00ec? \u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a c\u00f4ng ngh\u1ec7 Switch PoE trong h\u1ec7 th\u1ed1ng m\u1ea1ng hi\u1ec7n nay th\u1ebf n\u00e0o? 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