Not really sure; The board seems to have multiple versions and was made for Dell Computers, or at least some of them.http://www.ebay.com/itm/Dell-Optiplex-170L-Intel-Pentium-4-Socket-478-Motherboard-0C7018-E187242-/150721576729?pt=UK_Motherboards_CPUs&hash=item2317b4bf19