Hi! I have two Athlon XP/Athlon/Duron main boards: Shuttle AN35N Ultra v1 1 (http://www.firingsquad.com/hw/4165/Shuttle_AN35N/) Elitegroup N2U400-A (http://review.zdnet.com/product/motherboards/elitegroup-n2u400-a-v10-motherboard-atx-nforce2-ultra-400/30899177) I didn't test them. If you'll interested in, please write me privately. Eugene.