HP Ethernet 1Gb 4-port 331T Adapter. Connectivity technology: Wired, Host interface: PCI-E, Interface: Ethernet. Data transfer rate (max): 2000 Mbit/s, Data transfer rate: 1 Gbit/s, Bandwidth: 8 Gbit/s. Chipset: Broadcom BCM5719, Cabling technology: 10/100/1000BaseT(X), Networking standards: IEEE 802.1Q, IEEE 802.3, IEEE 802.3ab, IEEE 802.3ad, IEEE 802.3az, IEEE 802.3u, IEEE 802.3x. Power consumption (typical): 4.3 W. Width: 68.6 mm, Depth: 132.1 mm