1Power Over Ethernet2One Key VLAN and Extend319" Rackmount & Wallmount4Wide Temperature YS2083GS-PYS20162G-PYS2080G-PYS082G-PYS042F-PYS20242F-PAI-YS082G-PPoE Port8x10/100/1000Mbps16x10/100/1000Mbps8x10/100/1000Mbps8x10/100Mbps4x10/100Mbps24x10/100Mbps8x10/100/1000MbpsUpLink Port2x10/100/1000Mbps2x10/100/1000MbpsN/A2x10/100/1000Mbps2x10/100Mbps2x10/100/1000Mbps2x10/100/1000MbpsPOE Power Output120W250W120W120W78W400W120WSwitch Capacity12Gbps16Gbps16Gbps12Gbps 1.6G bps16Gbps20GbpsDimensions (L x W x H) 7.9 x 4.7 x 1.710. 6 x 7.1 x 1.77. 9 x 4.7 x 1.77. 9 x 4.7 x 1.77. 9 x 4.7 x 1.710. 6 x 7.1 x 1.77. 7 x 5 x 1.6W eight (lbs) 2.313. 312.312. 312.154. 621.98E xtend FunctionVLANOutput Power 15.4W /30W 15.4W /30W 15.4W /30W 15.4W /30W 15.4W /30W 15.4W /30W 15.4W /30WMetal CaseFanless DesignNetwork Protocol 802.3AF /AT 802.3AF /AT 802.3AF /AT 802.3AF /AT 802.3AF /AT 802.3AF /AT 802.3AF /AT Which is the Best for You?