HP 4-port 10GbE CX4. Ethernet interface type: 10 Gigabit, Ethernet LAN data rates: 10000 Mbit/s, Networking standards: IEEE 802.3ak. Fiber ethernet cabling technology: 10GBASE-CX4. Compatibility: ProCurve Switch 5400zl series. Dimensions (WxDxH): 206.5 x 261.6 x 44.5 mm, Weight: 790g