I'm sorry I can't list the part number on mine, it doesn't show up because I've disabled it in the BIOS. All I know is I have a type of Marvell Yukon gigabit integrated into my ASUS P5P800 motherboard, and it alone was the cause of much strife and constant locking up. No set of drivers, even those included with the motherboard, those found on windows update, or anywhere else, would solve this problem. However when I disabled it in the BIOS and installed a PCI NIC, the problem went away. I admit: I'm jaded with the brand so far.