Single lane (x1) | PCI Express ver 1.1 | Intel 82574L | Yes (9K frame size) | Includes brackets for both half height and full height slots | Yes, IPv6 based | 32KB | RJ-45 | 10/100/ 1000 | Category 5, 5E, and 6 or better | 802.3, 802.3u, 802.3x, 802.3ab, 802.3ad, 802.1p, 802.1Q

Intel 82571EB | Two | 10/ 100/ 1000 Mbps | PCI Express, four lanes (x4) | 96KB | Yes-single part number that includes brackets for both full height and half height (low profile) slots | RJ-45 | CATegory 5 or better | 1280 mA @ 3.3 V max | 802.3, 802.3u, 802.3x, 802.3ab, 802.3ad, 802.1p, 802.1Q

PCI Express | Four lane (x4) | 192KB | 10/100/1000Mbps | Yes - single part number that includes brackets for both full height and half height (low profile) slots | Two | RJ-45 | CATegory 5 or better; 100m (328ft) |