What sections have power when PC is off?


Jul 29, 2004
I am ashamed to admit this, but here is the story.

I was installing a new video card and needed to re-route some of the cabling. In doing so, 3 things happened.

1. I removed a PCI-E 1x card (from a 16x slot) and re-seated it. I hadn't reseated it all the way I later found out.
2. I removed the cable plugging into a Firewire header on the motherboard and plugged it back in.
3. I had accidentally pulled the power plug for a fan off the motherboard header. It may have been partially on the header during this incident.

I plugged the computer in and did not turn it on. A few minutes later, I started smelling smoke and saw the smoke coming from the general area at the edge of the board that had the Firewire header, PCI-E slot, and the fan header. I immediately pulled the power and noticed these three things upon inspection.

Everything seems to be working correctly, but I was wondering which parts would have had power while the PC was off?


[H]ipster Replacement
Sep 29, 2001
PCI and probably pci-e and pci-x slots as well