The power supply does not have IDE or SATA connections. These data connections are made between the drives and mother board. The power supply just supplies the power to the various devices on the computer including the mother board itself. The power supply required depends on the type of mother board you have. Safest bet is to get yourself a pentium power supply. This supply will have all the connections you require. If yours is not a pentium processor, don't panic this supply will still work. You will just have one connector (the four pin square connector) spare. If it is a pentium mother board this extra square connector has a cocket on the mother board.