I recently bought a new Acer AT3-605 minitower on sale at Frys. It didn't come with a video card, but I figured no big deal, I'll order one and install it, and worst case I'll have to upgrade the power supply too. Turned out the power supply came up short -- 300W vs 400W -- and when I tried to upgrade the power supply with a 500W PSU I had handy, I saw the Acer motherboard didn't use the standard 20 or 24-pin connections, but some strange 12-pin arrangement.
I couldn't find any information about it in the Acer documentation, or by Googling around, so I asked Acer support for information -- and got back a form response saying that they "don't recommend consumers upgrade the video card" and that they wouldn't give out compatability information. This means the PCI-E slot in an $800 MSRP computer is effectively useless.
Before I take this computer back to the store and pay whatever restocking fee they're going to charge me, does anyone happen to know how to upgrade the PSU in this model? The existing PSU is a 300W by FSP Group, model number FSP300-40AABA.