HP 12-port 100FX MTRJ. Ethernet interface type: Fast, Ethernet LAN data rates: 10, 100 Mbit/s, Networking standards: IEEE 802.3u. Fiber optic connector: MT-RJ, Fiber ethernet cabling technology: 100BASE-FX. Dimensions (WxDxH): 203.2 x 227.8 x 44.5 mm, Weight: 810g