{"id":4720,"date":"2025-10-14T11:12:00","date_gmt":"2025-10-14T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/difference-between-pse-and-pd-in-poe-networks\/"},"modified":"2026-06-22T09:02:40","modified_gmt":"2026-06-22T09:02:40","slug":"difference-between-pse-and-pd-in-poe-networks","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/difference-between-pse-and-pd-in-poe-networks","title":{"rendered":"PSE so v\u1edbi PD\u2014Thi\u1ebft b\u1ecb cung c\u1ea5p ngu\u1ed3n so v\u1edbi Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n trong PoE"},"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\/686d5d0598694700ab96d04e95124ff9.webp\" alt=\"PSE vs. PD in PoE\" class=\"wp-image-4718\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/686d5d0598694700ab96d04e95124ff9.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/686d5d0598694700ab96d04e95124ff9-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/686d5d0598694700ab96d04e95124ff9-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/686d5d0598694700ab96d04e95124ff9-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/686d5d0598694700ab96d04e95124ff9-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>PSE (Thi\u1ebft b\u1ecb C\u1ea5p ngu\u1ed3n)<\/strong> cung c\u1ea5p \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) qua c\u00e1p Ethernet; <strong>PD (Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n)<\/strong> ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng \u0111\u00f3. <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ieee-802-3af-poe-standard-explained\/\"><strong>C\u00e1c ti\u00eau chu\u1ea9n PoE<\/strong><\/a> (IEEE 802.3af\/at\/bt) quy \u0111\u1ecbnh m\u1ee9c c\u00f4ng su\u1ea5t c\u00f3 th\u1ec3 cung c\u1ea5p v\u00e0 c\u00e1ch thi\u1ebft b\u1ecb cung c\u1ea5p ngu\u1ed3n (PSE) v\u00e0 thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n (PD) ph\u00e1t hi\u1ec7n v\u00e0 th\u01b0\u01a1ng l\u01b0\u1ee3ng c\u00f4ng su\u1ea5t m\u1ed9t c\u00e1ch an to\u00e0n. Vi\u1ec7c hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa PSE v\u00e0 PD r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb \u0111\u00fang, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady c\u1ee7a h\u1ec7 th\u1ed1ng, l\u1eadp k\u1ebf ho\u1ea1ch v\u1ec1 nhi\u1ec7t v\u00e0 c\u00e1p, c\u0169ng nh\u01b0 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u0110\u1ecbnh ngh\u0129a r\u00f5 r\u00e0ng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u1ea1ng Ethernet hi\u1ec7n \u0111\u1ea1i kh\u00f4ng ch\u1ec9 truy\u1ec1n d\u1eef li\u1ec7u \u2014 m\u00e0 c\u00f2n cung c\u1ea5p \u0111i\u1ec7n n\u0103ng.<br\/>Kh\u1ea3 n\u0103ng n\u00e0y, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <strong>c\u00f4ng ngh\u1ec7 Cung c\u1ea5p \u0111i\u1ec7n qua Ethernet (PoE)<\/strong>, cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 \u0111i\u1ec3m truy c\u1eadp kh\u00f4ng d\u00e2y, camera IP v\u00e0 \u0111i\u1ec7n tho\u1ea1i VoIP nh\u1eadn c\u1ea3 d\u1eef li\u1ec7u l\u1eabn \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) th\u00f4ng qua m\u1ed9t c\u00e1p xo\u1eafn \u0111\u00f4i duy nh\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trung t\u00e2m c\u1ee7a m\u1ecdi h\u1ec7 th\u1ed1ng PoE g\u1ed3m hai th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>PSE (Thi\u1ebft b\u1ecb C\u1ea5p ngu\u1ed3n)<\/strong> \u2014 thi\u1ebft b\u1ecb <em>cung c\u1ea5p<\/em> \u0111i\u1ec7n n\u0103ng.<\/p><\/li><li><p><strong>PD (Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n)<\/strong> \u2014 thi\u1ebft b\u1ecb <em>nh\u1eadn<\/em> \u0111i\u1ec7n n\u0103ng.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch hai th\u00e0nh ph\u1ea7n n\u00e0y t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 thi\u1ebft k\u1ebf c\u00e1c m\u1ea1ng PoE hi\u1ec7u qu\u1ea3, \u0111\u00e1ng tin c\u1eady v\u00e0 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" ><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/poe-pse-power-sourcing-equipment-guide\/\">PSE \u2014 Thi\u1ebft b\u1ecb cung c\u1ea5p ngu\u1ed3n (Power Sourcing Equipment)<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>PSE<\/strong> l\u00e0 b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb n\u00e0o ti\u00eam \u0111i\u1ec7n n\u0103ng v\u00e0o c\u00e1c c\u1eb7p d\u00e2y xo\u1eafn c\u1ee7a Ethernet: c\u00e1c switch h\u1ed7 tr\u1ee3 PoE (<strong>\u0111\u1ea7u cu\u1ed1i<\/strong>) ho\u1eb7c b\u1ed9 ti\u00eam ngo\u00e0i \/<strong>midspan<\/strong>. PSE ch\u1ecbu tr\u00e1ch nhi\u1ec7m ph\u00e1t hi\u1ec7n, ph\u00e2n lo\u1ea1i v\u00e0 qu\u1ea3n l\u00fd vi\u1ec7c ph\u00e2n b\u1ed5 c\u00f4ng su\u1ea5t tr\u00ean t\u1eebng c\u1ed5ng. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vai tr\u00f2 c\u1ee7a PSE l\u00e0 ph\u00e1t hi\u1ec7n xem thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i c\u00f3 h\u1ed7 tr\u1ee3 PoE hay kh\u00f4ng, x\u00e1c \u0111\u1ecbnh y\u00eau c\u1ea7u c\u00f4ng su\u1ea5t c\u1ee7a thi\u1ebft b\u1ecb \u0111\u00f3 v\u00e0 cung c\u1ea5p \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n ph\u00f9 h\u1ee3p m\u1ed9t c\u00e1ch an to\u00e0n. C\u00e1c c\u01a1 ch\u1ebf ph\u00e1t hi\u1ec7n v\u00e0 ph\u00e2n lo\u1ea1i \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c thi\u1ebft b\u1ecb kh\u00f4ng h\u1ed7 tr\u1ee3 PoE s\u1ebd kh\u00f4ng bao gi\u1edd b\u1ecb c\u1ea5p \u0111i\u1ec7n v\u00f4 t\u00ecnh, t\u1eeb \u0111\u00f3 b\u1ea3o v\u1ec7 c\u00e1c thi\u1ebft b\u1ecb nh\u1ea1y c\u1ea3m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c lo\u1ea1i PSE ph\u1ed5 bi\u1ebfn:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Endspan PSE:<\/strong> T\u00edch h\u1ee3p tr\u1ef1c ti\u1ebfp v\u00e0o c\u1ed5ng switch h\u1ed7 tr\u1ee3 PoE.<\/p><\/li><li><p><strong>Midspan PSE:<\/strong> B\u1ed9 ti\u00eam ngo\u00e0i \u0111\u1eb7t gi\u1eefa switch kh\u00f4ng h\u1ed7 tr\u1ee3 PoE v\u00e0 PD.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c thi\u1ebft b\u1ecb PSE tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n IEEE quy \u0111\u1ecbnh c\u00f4ng su\u1ea5t \u0111\u1ea7u ra t\u1ed1i \u0111a tr\u00ean m\u1ed7i c\u1ed5ng v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u01b0\u01a1ng l\u01b0\u1ee3ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" ><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/poe-pd-powered-device-guide\/\">PD \u2014 Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n (Powered Device)<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">PD l\u00e0 b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb n\u00e0o nh\u1eadn \u0111i\u1ec7n n\u0103ng t\u1eeb PSE qua c\u00e1p Ethernet, v\u00ed d\u1ee5 nh\u01b0, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-a-wireless-access-point-wap\/\">\u0111i\u1ec3m truy c\u1eadp kh\u00f4ng d\u00e2y (WAP)<\/a>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ip-internet-protocol-cameras-overview\/\">Camera IP<\/a>, \u0111i\u1ec7n tho\u1ea1i VoIP, switch nh\u1ecf ho\u1eb7c thi\u1ebft b\u1ecb IoT. C\u00e1c PD ph\u1ea3i tr\u00ecnh b\u00e0y m\u1ed9t \u0111i\u1ec7n tr\u1edf \u0111\u1eb7c tr\u01b0ng x\u00e1c \u0111\u1ecbnh \u0111\u1ec3 PSE c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 b\u1eadt ngu\u1ed3n m\u1ed9t c\u00e1ch an to\u00e0n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed7i PD ch\u1ee9a m\u1ed9t <strong>giao di\u1ec7n PoE<\/strong> v\u1edbi m\u1ea1ch ph\u00e1t hi\u1ec7n v\u00e0 chuy\u1ec3n \u0111\u1ed5i DC-DC, cho ph\u00e9p thi\u1ebft b\u1ecb ho\u1ea1t \u0111\u1ed9ng an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 t\u1eeb \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c cung c\u1ea5p (th\u01b0\u1eddng l\u00e0 44\u201357 V DC).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >C\u00e1ch PSE v\u00e0 PD ph\u1ed1i h\u1ee3p ho\u1ea1t \u0111\u1ed9ng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t k\u1ebft n\u1ed1i PoE b\u1eaft \u0111\u1ea7u b\u1eb1ng m\u1ed9t <strong>qu\u00e1 tr\u00ecnh b\u1eaft tay (handshake)<\/strong> \u2014 m\u1ed9t quy tr\u00ecnh ph\u00e1t hi\u1ec7n nh\u1eb1m x\u00e1c nh\u1eadn xem thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i c\u00f3 h\u1ed7 tr\u1ee3 PoE hay kh\u00f4ng. PSE g\u1eedi m\u1ed9t \u0111i\u1ec7n \u00e1p nh\u1ecf \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh <em>\u0111i\u1ec7n tr\u1edf \u0111\u1eb7c tr\u01b0ng (signature resistance)<\/em>.<br\/>c\u1ee7a PD. N\u1ebfu gi\u00e1 tr\u1ecb h\u1ee3p l\u1ec7, PSE ti\u1ebfn h\u00e0nh <strong>ph\u00e2n lo\u1ea1i (classification)<\/strong>, \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh m\u1ee9c c\u00f4ng su\u1ea5t m\u00e0 PD c\u1ea7n (v\u00ed d\u1ee5: Class 0\u20138).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi x\u00e1c nh\u1eadn, PSE \u00e1p d\u1ee5ng \u0111i\u1ec7n \u00e1p ho\u1ea1t \u0111\u1ed9ng \u0111\u1ea7y \u0111\u1ee7 v\u00e0 b\u1eaft \u0111\u1ea7u cung c\u1ea5p \u0111i\u1ec7n n\u0103ng, trong khi b\u1ed9 chuy\u1ec3n \u0111\u1ed5i n\u1ed9i b\u1ed9 c\u1ee7a PD \u1ed5n \u0111\u1ecbnh \u0111i\u1ec7n n\u0103ng cho m\u1ea1ch \u0111i\u1ec7n c\u1ee7a n\u00f3.<br\/>C\u00e1c h\u1ec7 th\u1ed1ng PoE+ v\u00e0 PoE++ hi\u1ec7n \u0111\u1ea1i c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/lldp-in-power-over-ethernet-systems\/\"><strong>LLDP (Giao th\u1ee9c kh\u00e1m ph\u00e1 l\u1edbp li\u00ean k\u1ebft)<\/strong><\/a> \u0111\u1ec3 th\u01b0\u01a1ng l\u01b0\u1ee3ng c\u00f4ng su\u1ea5t m\u1ed9t c\u00e1ch linh ho\u1ea1t, n\u00e2ng cao hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng v\u00e0 kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t m\u1ea1ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >C\u00e1c ti\u00eau chu\u1ea9n PoE v\u00e0 m\u1ee9c c\u00f4ng su\u1ea5t<\/h2>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 135px;\"\/><col style=\"width: 99px;\"\/><col style=\"width: 105px;\"\/><col style=\"width: 114px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"135\"><p><strong>Ti\u00eau chu\u1ea9n<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"99\"><p><strong>Lo\u1ea1i<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"105\"><p><strong>C\u00f4ng su\u1ea5t t\u1ed1i \u0111a c\u1ee7a PSE<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"114\"><p><strong>C\u00f4ng su\u1ea5t kh\u1ea3 d\u1ee5ng t\u1ea1i Thi\u1ebft b\u1ecb \u0110\u01b0\u1ee3c C\u1ea5p Ngu\u1ed3n (PD)<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/strong><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"135\"><p>IEEE 802.3af<br\/><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ieee-802-3af-poe-standard-explained\/\">(PoE)<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"99\"><p>Lo\u1ea1i 1<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"105\"><p>15,4 W<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"114\"><p>12,95 W<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110i\u1ec7n tho\u1ea1i IP, \u0111i\u1ec3m truy c\u1eadp kh\u00f4ng d\u00e2y (WAP) c\u01a1 b\u1ea3n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"135\"><p>IEEE 802.3at<br\/><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ieee-802-3at-power-over-ethernet-plus-standard\/\">(PoE+)<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"99\"><p>Lo\u1ea1i 2 <\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"105\"><p>30 W<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"114\"><p>25,5 W<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Camera PTZ, \u0111i\u1ec3m truy c\u1eadp b\u0103ng t\u1ea7n k\u00e9p (Dual-Band AP)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"135\"><p>IEEE 802.3bt<br\/><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-ieee-802-3-bt-poe-standard\/\">(PoE++)<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"99\"><p>Lo\u1ea1i 3<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"105\"><p>60 W<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"114\"><p>51 W<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u00e1y kh\u00e1ch m\u1ecfng (Thin Clients), thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i POS<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"135\"><p>IEEE 802.3bt<br\/>(PoE++)<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"99\"><p>Lo\u1ea1i 4 <\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"105\"><p>90\u2013100 W<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"114\"><p>71\u201373 W<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Camera Pan-Tilt-Zoom, b\u1ea3ng \u0111\u00e8n LED, b\u1ed9 \u0111i\u1ec1u khi\u1ec3n truy c\u1eadp<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>Note:<\/strong> S\u1ef1 ch\u00eanh l\u1ec7ch gi\u1eefa c\u00f4ng su\u1ea5t c\u1ee7a PSE v\u00e0 PD l\u00e0 do t\u1ed5n hao \u0111i\u1ec7n tr\u1edf tr\u00ean c\u00e1p.<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c ti\u00eau chu\u1ea9n n\u00e0y \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch gi\u1eefa c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t kh\u00e1c nhau v\u00e0 b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb kh\u1ecfi c\u00e1c s\u1ef1 c\u1ed1 \u0111i\u1ec7n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >C\u00e1c y\u1ebfu t\u1ed1 th\u1ef1c t\u1ebf c\u1ea7n c\u00e2n nh\u1eafc khi l\u1ef1a ch\u1ecdn PSE v\u00e0 PD<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2714 Ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n:<\/strong><br\/>\u0110\u1ea3m b\u1ea3o PSE c\u1ee7a b\u1ea1n h\u1ed7 tr\u1ee3 l\u1edbp c\u00f4ng su\u1ea5t c\u1ee7a PD. Vi\u1ec7c s\u1eed d\u1ee5ng switch PoE (802.3af) cho camera PoE+ s\u1ebd d\u1eabn \u0111\u1ebfn l\u1ed7i thi\u1ebfu c\u00f4ng su\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2714 L\u1eadp k\u1ebf ho\u1ea1ch ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t:<\/strong><br\/>C\u00e1c switch chia s\u1ebb t\u1ed5ng c\u00f4ng su\u1ea5t cho t\u1ea5t c\u1ea3 c\u00e1c c\u1ed5ng; lu\u00f4n d\u00e0nh m\u1ed9t kho\u1ea3ng d\u1ef1 ph\u00f2ng cho t\u1ea3i \u0111\u1ec9nh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2714 Ki\u1ec3m tra c\u00e1p:<\/strong><br\/>C\u00f4ng su\u1ea5t cao h\u01a1n <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-ieee-802-3-bt-poe-standard\/\">(PoE++)<\/a> y\u00eau c\u1ea7u c\u00e1p Cat6 ho\u1eb7c Cat6a \u0111\u1ec3 gi\u1ea3m nhi\u1ec7t v\u00e0 t\u1ed5n hao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2714 Qu\u1ea3n l\u00fd nhi\u1ec7t v\u00e0 an to\u00e0n:<\/strong><br\/>C\u00e1c l\u1eafp \u0111\u1eb7t c\u00f4ng su\u1ea5t cao c\u1ea7n tu\u00e2n theo c\u00e1c khuy\u1ebfn ngh\u1ecb c\u1ee7a IEEE v\u1ec1 vi\u1ec7c b\u00f3 c\u00e1p v\u00e0 gi\u1ea3m c\u00f4ng su\u1ea5t (derating).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2714 S\u1eed d\u1ee5ng c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u1ea1t chu\u1ea9n:<\/strong><br\/>C\u00e1c th\u00e0nh ph\u1ea7n <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/491473.htm\">B\u1ed9 k\u1ebft n\u1ed1i PoE RJ45<\/a> v\u00e0 cu\u1ed9n c\u1ea3m \u0111\u1ea1t ch\u1ee9ng nh\u1eadn \u0111\u1ea3m b\u1ea3o c\u00e1ch ly, gi\u1ea3m nhi\u1ec5u \u0111i\u1ec7n t\u1eeb (EMI) v\u00e0 x\u1eed l\u00fd d\u00f2ng \u0111i\u1ec7n an to\u00e0n.<\/p>","protected":false},"excerpt":{"rendered":"<p>Learn the difference between PSE and PD in PoE networks, how detection &#038; classification work, and which LINK-PP PoE RJ45 products suit your WAP, camera or VoIP deployment.<\/p>","protected":false},"author":1,"featured_media":4719,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[22],"class_list":["post-4720","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-integrated-rj45-connectors"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4720","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=4720"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4720\/revisions"}],"predecessor-version":[{"id":11355,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4720\/revisions\/11355"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/4719"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=4720"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=4720"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=4720"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}