HP 416585-B21 NC325m PCI Express Quad Port Gigabit Server Adapter Type: NC325m PCI Express Quad Port Gigabit Server Adapter Specifications: Compliance: IEEE 802.3ab, 802.3u, 802.3x, 802.3ad, 802.3p, 802.1Q Bus type: PCI Express Data path: Four lanes (x4) Onboard memory 312 KB (Note: Consisting of a 56K Receive Buffer and a 22K Transmit buffer for each port.) Transfer rate: 1000Mbps Ports: Four Controller: Broadcom 5715S Power requirements: Operating voltage : 12V /- 8% Maximum: 1.0..