{"id":4769,"date":"2025-10-09T11:12:00","date_gmt":"2025-10-09T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/ieee-802-3af-poe-standard-explained\/"},"modified":"2026-06-22T06:30:37","modified_gmt":"2026-06-22T06:30:37","slug":"ieee-802-3af-poe-standard-explained","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ieee-802-3af-poe-standard-explained","title":{"rendered":"Ti\u00eau chu\u1ea9n IEEE 802.3af (PoE) l\u00e0 g\u00ec?"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ffe0f741283441629f7d1da65b6fe9ae.jpg\" alt=\"What is IEEE 802.3af?\" class=\"wp-image-4765\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ffe0f741283441629f7d1da65b6fe9ae.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ffe0f741283441629f7d1da65b6fe9ae-300x178.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ffe0f741283441629f7d1da65b6fe9ae-1024x608.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ffe0f741283441629f7d1da65b6fe9ae-768x456.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ffe0f741283441629f7d1da65b6fe9ae-18x12.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf10 Gi\u1edbi thi\u1ec7u: IEEE 802.3af l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>IEEE 802.3af<\/strong>, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi ph\u1ed5 bi\u1ebfn l\u00e0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-you-need-to-know-about-power-over-ethernet\/\"><strong>c\u00f4ng ngh\u1ec7 Cung c\u1ea5p \u0111i\u1ec7n qua Ethernet (PoE)<\/strong><\/a>, l\u00e0 ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf g\u1ed1c cho ph\u00e9p truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng c\u00f9ng v\u1edbi d\u1eef li\u1ec7u tr\u00ean c\u00e1c c\u00e1p Ethernet ti\u00eau chu\u1ea9n. \u0110\u01b0\u1ee3c th\u00f4ng qua v\u00e0o n\u0103m <strong>2003<\/strong>, c\u00f4ng ngh\u1ec7 n\u00e0y cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 \u0111i\u1ec7n tho\u1ea1i IP, \u0111i\u1ec3m truy c\u1eadp kh\u00f4ng d\u00e2y v\u00e0 camera nh\u1eadn c\u1ea3 \u0111i\u1ec7n n\u0103ng v\u00e0 d\u1eef li\u1ec7u th\u00f4ng qua m\u1ed9t c\u00e1p Cat5 (ho\u1eb7c cao h\u01a1n) duy nh\u1ea5t \u2014 lo\u1ea1i b\u1ecf nhu c\u1ea7u s\u1eed d\u1ee5ng b\u1ed9 chuy\u1ec3n \u0111\u1ed5i ngu\u1ed3n ri\u00eang bi\u1ec7t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf10 T\u1ed5ng quan k\u1ef9 thu\u1eadt v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1ec1 \u0111i\u1ec7n n\u0103ng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n IEEE 802.3af quy \u0111\u1ecbnh c\u00e1ch th\u1ee9c cung c\u1ea5p \u0111i\u1ec7n t\u1eeb m\u1ed9t <strong>Thi\u1ebft b\u1ecb cung c\u1ea5p \u0111i\u1ec7n (PSE)<\/strong>, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ed9 chuy\u1ec3n m\u1ea1ch PoE ho\u1eb7c b\u1ed9 ch\u00e8n PoE (injector), t\u1edbi m\u1ed9t <strong>Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n (PD)<\/strong> nh\u01b0 m\u1ed9t <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ip-internet-protocol-cameras-overview\/\">camera IP<\/a> ho\u1eb7c \u0111i\u1ec7n tho\u1ea1i VoIP.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>C\u00f4ng su\u1ea5t \u0111\u1ea7u ra t\u1ed1i \u0111a t\u1ea1i PSE:<\/strong> 15,4 W<\/p><\/li><li><p><strong>C\u00f4ng su\u1ea5t kh\u1ea3 d\u1ee5ng t\u1ea1i PD (sau t\u1ed5n hao tr\u00ean c\u00e1p):<\/strong> 12,95 W<\/p><\/li><li><p><strong>\u0110i\u1ec7n \u00e1p ho\u1ea1t \u0111\u1ed9ng:<\/strong> 44\u201357 V m\u1ed9t chi\u1ec1u (\u0111i\u1ec7n \u00e1p danh \u0111\u1ecbnh 48 V)<\/p><\/li><li><p><strong>C\u00e1p h\u1ed7 tr\u1ee3:<\/strong> Cat5 ho\u1eb7c cao h\u01a1n (s\u1eed d\u1ee5ng hai trong b\u1ed1n c\u1eb7p xo\u1eafn)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec7n n\u0103ng \u0111\u01b0\u1ee3c truy\u1ec1n qua c\u00e1c <strong>c\u1eb7p d\u00e2y d\u1ef1 ph\u00f2ng (ch\u00e2n 4\u20135 v\u00e0 7\u20138)<\/strong> or <strong>c\u1eb7p d\u00e2y d\u1eef li\u1ec7u (ch\u00e2n 1\u20132 v\u00e0 3\u20136),<\/strong> t\u00f9y thu\u1ed9c v\u00e0o c\u1ea5u h\u00ecnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf10 C\u00e1c t\u00ednh n\u0103ng v\u00e0 l\u1ee3i th\u1ebf ch\u00ednh<\/h2>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p><strong>Gi\u1ea3i ph\u00e1p c\u00e1p \u0111\u01a1n<\/strong> \u2013 Gi\u1ea3m \u0111\u1ed9 ph\u1ee9c t\u1ea1p v\u00e0 chi ph\u00ed l\u1eafp \u0111\u1eb7t b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p \u0111i\u1ec7n n\u0103ng v\u00e0 d\u1eef li\u1ec7u tr\u00ean m\u1ed9t c\u00e1p duy nh\u1ea5t.<\/p><\/li><li><p><strong>Qu\u1ea3n l\u00fd \u0111i\u1ec7n n\u0103ng t\u1eadp trung<\/strong> \u2013 \u0110i\u1ec7n n\u0103ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n, gi\u00e1m s\u00e1t v\u00e0 qu\u1ea3n l\u00fd t\u1eadp trung th\u00f4ng qua b\u1ed9 chuy\u1ec3n m\u1ea1ch Ethernet.<\/p><\/li><li><p><strong>Ph\u00e1t hi\u1ec7n \u0111i\u1ec7n n\u0103ng an to\u00e0n<\/strong> \u2013 H\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n th\u00f4ng minh xem thi\u1ebft b\u1ecb c\u00f3 h\u1ed7 tr\u1ee3 PoE hay kh\u00f4ng tr\u01b0\u1edbc khi cung c\u1ea5p \u0111i\u1ec7n, nh\u1eb1m ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng thi\u1ebft b\u1ecb kh\u00f4ng h\u1ed7 tr\u1ee3 PoE.<\/p><\/li><li><p><strong>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 \u0111\u1ed9 tin c\u1eady cao<\/strong> \u2013 \u0110\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c m\u1edf r\u1ed9ng m\u1ea1ng v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh trong c\u00e1c m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p v\u00e0 c\u00f4ng nghi\u1ec7p.<\/p><\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"567\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b2d73e8911ab405186b7e6731eae38a1.jpg\" alt=\"IEEE 802.3af (PoE)\" class=\"wp-image-4766\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b2d73e8911ab405186b7e6731eae38a1.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b2d73e8911ab405186b7e6731eae38a1-300x142.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b2d73e8911ab405186b7e6731eae38a1-1024x484.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b2d73e8911ab405186b7e6731eae38a1-768x363.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b2d73e8911ab405186b7e6731eae38a1-18x9.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf10 C\u00e1c \u1ee9ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh c\u1ee7a PoE theo ti\u00eau chu\u1ea9n IEEE 802.3af<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n 802.3af r\u1ea5t ph\u00f9 h\u1ee3p cho <strong>c\u00e1c thi\u1ebft b\u1ecb c\u00f3 c\u00f4ng su\u1ea5t th\u1ea5p \u0111\u1ebfn trung b\u00ecnh<\/strong>, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>\u0110i\u1ec7n tho\u1ea1i IP<\/strong> \u2013 Truy\u1ec1n th\u00f4ng t\u00edch h\u1ee3p m\u00e0 kh\u00f4ng c\u1ea7n b\u1ed9 chuy\u1ec3n \u0111\u1ed5i b\u00ean ngo\u00e0i.<\/p><\/li><li><p><strong>\u0110i\u1ec3m truy c\u1eadp kh\u00f4ng d\u00e2y (WAP)<\/strong> \u2013 Tri\u1ec3n khai thu\u1eadn ti\u1ec7n tr\u00ean tr\u1ea7n nh\u00e0 ho\u1eb7c c\u00e1c khu v\u1ef1c xa x\u00f4i.<\/p><\/li><li><p><strong>Gi\u00e1m s\u00e1t an ninh <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/poe-lan-transformers-in-ip-cameras\/\"><strong>Camera IP<\/strong><\/a> \u2013 Cung c\u1ea5p \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh cho c\u00e1c h\u1ec7 th\u1ed1ng an ninh.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/iot-internet-of-things-definition-and-real-world-examples\/\"><strong>IoT<\/strong><\/a><strong> C\u1ed5ng k\u1ebft n\u1ed1i v\u00e0 c\u1ea3m bi\u1ebfn<\/strong> \u2013 L\u1eafp \u0111\u1eb7t \u0111\u01a1n gi\u1ea3n trong c\u00e1c h\u1ec7 th\u1ed1ng t\u00f2a nh\u00e0 th\u00f4ng minh.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1edbi kh\u1ea3 n\u0103ng cung c\u1ea5p g\u1ea7n 13 W \u0111i\u1ec7n n\u0103ng s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c, PoE theo ti\u00eau chu\u1ea9n IEEE 802.3af \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i m\u1ea1ng nh\u1eb9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf10 So s\u00e1nh PoE v\u00e0 PoE+ (IEEE 802.3at): S\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 <strong>IEEE 802.3af<\/strong> cung c\u1ea5p c\u00f4ng su\u1ea5t t\u1ed1i \u0111a l\u00ean t\u1edbi 15,4 W, c\u00f2n ti\u00eau chu\u1ea9n sau n\u00e0y <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ieee-802-3at-power-over-ethernet-plus-standard\/\"><strong>IEEE 802.3at<\/strong><\/a><strong> (PoE+)<\/strong> nh\u00e2n \u0111\u00f4i kh\u1ea3 n\u0103ng n\u00e0y l\u00ean th\u00e0nh <strong>30 W<\/strong>, cho ph\u00e9p h\u1ed7 tr\u1ee3 c\u00e1c thi\u1ebft b\u1ecb hi\u1ec7u n\u0103ng cao h\u01a1n nh\u01b0 camera PTZ v\u00e0 c\u00e1c \u0111i\u1ec3m truy c\u1eadp Wi-Fi 6 ti\u00ean ti\u1ebfn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong th\u1ef1c t\u1ebf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>PoE (802.3af):<br><\/strong> Ph\u00f9 h\u1ee3p l\u00fd t\u01b0\u1edfng cho c\u00e1c thi\u1ebft b\u1ecb c\u00f4ng su\u1ea5t th\u1ea5p (\u0111i\u1ec7n tho\u1ea1i, \u0111i\u1ec3m truy c\u1eadp c\u01a1 b\u1ea3n)<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ieee-802-3at-power-over-ethernet-plus-standard\/\"><strong>PoE+ (802.3at):<\/strong><\/a><strong>:<\/strong> \u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c thi\u1ebft b\u1ecb c\u00f4ng su\u1ea5t cao h\u01a1n (camera HD, \u0111i\u1ec3m truy c\u1eadp nhi\u1ec1u radio)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea3 hai ti\u00eau chu\u1ea9n \u0111\u1ec1u <strong>t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c<\/strong>, ngh\u0129a l\u00e0 c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch PoE+ c\u00f3 th\u1ec3 c\u1ea5p \u0111i\u1ec7n an to\u00e0n cho c\u00e1c thi\u1ebft b\u1ecb PoE.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf10 C\u00e1c gi\u1ea3i ph\u00e1p PoE c\u1ee7a LINK-PP d\u00e0nh cho m\u1ea1ng IEEE 802.3af<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5171627953c4459cb1c7b580d17ceb09.jpg\" alt=\"LINK-PP PoE Solutions for IEEE 802.3af Networks\" class=\"wp-image-4767\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5171627953c4459cb1c7b580d17ceb09.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5171627953c4459cb1c7b580d17ceb09-300x178.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5171627953c4459cb1c7b580d17ceb09-1024x608.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5171627953c4459cb1c7b580d17ceb09-768x456.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5171627953c4459cb1c7b580d17ceb09-18x12.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c vi\u1ec7c truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng v\u00e0 d\u1eef li\u1ec7u \u1ed5n \u0111\u1ecbnh theo ti\u00eau chu\u1ea9n IEEE 802.3af, c\u00e1c th\u00e0nh ph\u1ea7n c\u1ea3m bi\u1ebfn Ethernet ch\u1ea5t l\u01b0\u1ee3ng cao l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">, nh\u00e0 s\u1ea3n xu\u1ea5t h\u00e0ng \u0111\u1ea7u c\u00e1c linh ki\u1ec7n k\u1ebft n\u1ed1i m\u1ea1ng, cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p c\u1ea3m bi\u1ebfn PoE \u0111\u00e1ng tin c\u1eady v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\ud83d\udd39 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/481912.htm\"><strong>\u0110\u1ea7u n\u1ed1i RJ45 c\u1ea3m bi\u1ebfn PoE<\/strong><\/a>:<br\/>\u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c \u1ee9ng d\u1ee5ng IEEE 802.3af\/at, t\u00edch h\u1ee3p c\u00e1c bi\u1ebfn \u00e1p c\u1ea3m bi\u1ebfn \u0111\u1ea3m b\u1ea3o c\u00e1ch ly, gi\u1ea3m nhi\u1ec5u v\u00e0 cung c\u1ea5p \u0111i\u1ec7n n\u0103ng \u1ed5n \u0111\u1ecbnh \u1edf m\u1ee9c 15,4 W.<\/p><\/li><li><p>\ud83d\udd39 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/452779.htm\"><strong>M\u00f4-\u0111un bi\u1ebfn \u00e1p c\u1ea3m bi\u1ebfn PoE<\/strong>:<\/a><br\/>Bi\u1ebfn \u00e1p LAN PoE c\u1ee7a LINK-PP \u0111\u1ea3m b\u1ea3o vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u \u0111\u00e1ng tin c\u1eady v\u00e0 ch\u1ee9c n\u0103ng Power over Ethernet (PoE) hi\u1ec7u qu\u1ea3.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1edd s\u1eed d\u1ee5ng c\u00e1c linh ki\u1ec7n LINK-PP, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb g\u1ed1c (OEM) v\u00e0 nh\u00e0 t\u00edch h\u1ee3p m\u1ea1ng c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o <strong>\u0111\u1ed9 tin c\u1eady cao, hi\u1ec7u su\u1ea5t EMI v\u01b0\u1ee3t tr\u1ed9i v\u00e0 tu\u00e2n th\u1ee7 \u0111\u1ea7y \u0111\u1ee7 ti\u00eau chu\u1ea9n IEEE<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf10 K\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>IEEE 802.3af (PoE)<\/strong> ti\u00eau chu\u1ea9n n\u00e0y \u0111\u00e3 c\u00e1ch m\u1ea1ng h\u00f3a m\u1ea1ng Ethernet b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng v\u00e0 d\u1eef li\u1ec7u tr\u00ean m\u1ed9t h\u1ea1 t\u1ea7ng duy nh\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3. \u0110\u1ebfn nay, n\u00f3 v\u1eabn l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a c\u00e1c c\u00f4ng ngh\u1ec7 PoE hi\u1ec7n \u0111\u1ea1i, gi\u00fap tri\u1ec3n khai m\u1ea1ng tr\u00ean to\u00e0n c\u1ea7u m\u1ed9t c\u00e1ch ti\u1ebft ki\u1ec7m chi ph\u00ed, linh ho\u1ea1t v\u00e0 d\u1ec5 m\u1edf r\u1ed9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c doanh nghi\u1ec7p v\u00e0 nh\u00e0 t\u00edch h\u1ee3p t\u00ecm ki\u1ebfm ph\u1ea7n c\u1ee9ng \u0111\u00e1ng tin c\u1eady cho c\u00e1c thi\u1ebft k\u1ebf h\u1ed7 tr\u1ee3 PoE, <strong>c\u00e1c s\u1ea3n ph\u1ea9m PoE c\u1ee7a LINK-PP<\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/478693.htm\"><strong>\u0111\u1ea7u n\u1ed1i RJ45 c\u1ea3m bi\u1ebfn PoE<\/strong><\/a> and <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/439395.htm\"><strong>bi\u1ebfn \u00e1p PoE<\/strong><\/a> mang l\u1ea1i hi\u1ec7u su\u1ea5t m\u1ea1nh m\u1ebd, \u0111\u1ea3m b\u1ea3o vi\u1ec7c cung c\u1ea5p \u0111i\u1ec7n an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 cho nhi\u1ec1u lo\u1ea1i thi\u1ebft b\u1ecb kh\u00e1c nhau.<\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u \u00fd ngh\u0129a c\u1ee7a IEEE 802.3af (PoE), c\u00e1ch n\u00f3 cung c\u1ea5p c\u00f4ng su\u1ea5t l\u00ean \u0111\u1ebfn 15,4 W qua c\u00e1p Ethernet v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng ch\u00ednh c\u1ee7a n\u00f3. Kh\u00e1m ph\u00e1 b\u1ed9 bi\u1ebfn \u00e1p t\u1eeb t\u00ednh PoE RJ45 LINK-PP \u0111\u1ec3 truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u1ed5n \u0111\u1ecbnh.<\/p>","protected":false},"author":1,"featured_media":4768,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[22,23],"class_list":["post-4769","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-integrated-rj45-connectors","tag-link-pp-lan-transformers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4769","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/comments?post=4769"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4769\/revisions"}],"predecessor-version":[{"id":11032,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4769\/revisions\/11032"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/4768"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=4769"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=4769"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=4769"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}