I received this from a friend but don't know how to use it, so I'm selling it. It seems almost new, having only been tested. 5-port Gigabit switching hub, 1000/100/10Mbps compatible, compact design. - Brand: ELECOM - Model: EHC-05PA-B-K - Number of ports: 5 ports - LAN ports: 1000/100/10Mbps - MAC address: 2,048 entries - Power supply: AC100-240V 50/60Hz - Size: (W)90.4 x (D)84.5 x (H)34.5mm Thank you for looking.