I just switched an AbitBE6-II for an Abit SH6. Surprise,surprise, my HD had been running at ATA33 the whole time I was useing the old board.I am now trying to get the new board to run at 66. I didn't reformat when I switched and the HD was properly recognised( Qunatum Fireball LM 30gig ). The heads, cylinders etc. are right. I changed the jumper setting on the drive to cable select,checked that the blue connector on the 80pin cable was tight in IDE 1 slot,installed Intel Busmaster vers. 6.0,installed coresponding driver on primary IDE controller,changed BIOS setting on primary to PIO mode 4,thats it,--still no 66. Si Sandra benchmark 8230,66 mark should be 13000.Please help, bo