YS20242F-PYS20162G-PYS2080G-PYS082G-PYS042F-PAI-YS2421FS-PAI-YS2422GS-PPoE Port24x10/100Mbps16x10/100/1000Mbps8x10/100/1000Mbps8x10/100Mbps4x10/100Mbps24x10/100Mbps24x10/100/1000MbpsUpLink Port2x10/100/1000Mbps2x10/100/1000MbpsN/A2x10/100/1000Mbps2x10/100Mbps2x10/100/1000Mbps2x10/100/1000MbpsPOE Power Output400W250W120W120W78W300W400WSwitch Capacity16Gbps16Gbps16Gbps12Gbps 1.6G bps 10.8G bps56GbpsDimensions (L x W x H) 10.6 x 7.1 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 1.712. 2 x 8 x 1.717. 3x 8.3 x 1.7W eight (lbs) 4.623. 312.312. 312.155. 75.4E xtend FunctionVLANSFP PortN/AN/AN/AN/AN/A1x10/100/1000Mbps2x10/100/1000MbpsMetal 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?