Ok so regarding the PCI slots. the 660 will fit and work fine, but put it in the slot nearest the CPU as this is the only PCIe3.0 x16 slot. without a case on any size card will fit, the SFF part only matters about the height of the original case. any mATX/ATX aftermarket case will fit the 660 perfectly.
shorting the power pins will indeed boot the board, but its a pain to live with. i'd recommend you get a power button adapter from MODDIY to make your life so much easier. personally i made my own with some jumper connectors as i did it before i discovered MODDIY
you'll also NEED at least 1 fan adapter for the CPU fan header otherise you cant plug in the CPU fan. i'd also reccomend one for the SYS_FAN header as without it the board will erro on post so you get a "press f1 to continue" prompt
expect to get POST errors without the front panel connectors plugged in. you'll want to EITHER short the ground pins on the front panel connector to make it detect it's plugged in or rig up your own custom adapter to plug in the front panel audio, USB etc.
any more questions, just ask. I still have the PC in my house, my son uses it for gaming with a 1050ti stuck in.
sc350z reacted to Jay Deah in Dell Optiplex 790 power switch?
