I'm looking for a PCIe x1 SATA 2 expansion card with a minimum of 2 drive ports, preferably 4. The differences I have are: 1) only one drive will be powered up at a time, 2) the powered drive must be bootable 3) the card must fit the standard high profile form factor Operating systems are Win XP/7/2008 and various flavours of Linux. Does anyone have any ideas please? I have found some cards that seem to fit the requirement but they are all small form factor. I would appreciate some help.