I installed my graphics card into my g5 shuttle agp card and I thought I had unplugged the power, then a red light flashed on and off somewhere near the agp slot, I cant see where it came from but i know roughly where it was looked like a tiny led near the cd in connector, theres no listed led in that area but my motherboard was changed under warranty and I have the original manual. So I have no idea what happened the machine works so I dont think anything is damaged but what the was it ? and why did it flash when i pushed it into the slot.