I'm trying to remove and replace the psu of an inspiron 580. after unscrewing the four screws and unplugging all the connectors, i can't take the thing out because of what the documentation calls "power supply retention snaps", which appear to be a pair of metal studs on the bottom of the case. no matter how much i press down on them they continue to block the box from moving out. i also tried pushing one with a screwdriver which didn't seem to accomplish anything except permanently bend it downwards
as a side note, there's an orange sata cable attached to the motherboard; the other end is loose. any idea where this goes?
Thanks