The Fast Ethernet Switch provides 8 x 10/100Mbps Auto-Negotiation RJ45 ports. All ports support Auto MDI/MDIX function, eliminating the need for crossover cables or Uplink ports. The Switch is Plug-and-Play and each port can be used as general ports or Uplink ports and can be simply plugged into a server, a hub or a switch, using straight cable or crossover cable. Ports 8, Interface AUTO Negotiation/AUTO MDI/MDIX, External Power Supply 5VDC/1A, Transfer Method Store and Forward, Advanced Functions Green Technology, saving power up to 70% 802.3X Flow Control, Back Pressure, Auto-Uplink Every Port, Package Contents 8-Port 10/100Mbps Desktop Switch,Power Adapter, User Guide, Operating Temperature 0°C~40°C, Storage Temperature 40°C~70°C, Operating Humidity 10%~90% non-condensing, Storage Humidity 5%~90% non-condensing