Not sure who the manufacture is. XP ID's it as an Intel 8255X based PCI ethernet adaptor. There is no model# that I can see and I'm only guessing that it's a D-Link

Support Information:
Device Type: Network Adapter
Manufacturer: D-Link Systems
Model: Intel 8255x
Interface: PCI / ISA
Operating System: Windows Vista
Age of Device: < 2 years old
FCCID:

Find it on DriverGuide (http://members.driverguide.com/index.php?action=srch&sm=b&aax=&qa6=327&qa5=12&qa7=1801&dp=2&qm0=Intel+8255x&jmd=and&fzz=d) | Find it with Google (http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=D-Link+Systems+Network+Adapter++Intel+8255x+Windows+ Vista+) | Research manufacturer D-Link Systems (http://members.driverguide.com/index.php?action=getinfo&companyid=327)

http://www.intel.com/design/network/manuals/8255x_opensdm.htm

http://support.intel.com/support/network/