2736 Views 5 Replies Latest reply: Feb 8, 2009 7:07 PM by pandersoj
As you are looking into the computer you may see that each slot has a little flap at the left of the slot. You need to push the flap down slightly (don't need to use a lot of pressure) as you pull the card out of the slot.
You will find a lock bar on the right side of the slots that hold the cards (and empty slot covers) in place. Two knurled knobs are near the bottom the bar. Unscrew them to release the bar.
I'm sorry but the image is too dark to see anything inside the box where the slots are located.
The slot looks a bit like this:
The arrow above points to the left end of the slot where you will find the locking flap. Accessing the flap will require you to place a finger behind the video card to depress it in order to free the card. Otherwise if you force the card it will break the tongue portion on the card that locks it in place. Hope this is helpful.
Your 3870 should have come with pictures and instructions on how to both remove the old card and install the new one. If you didn't get these, then be sure you didn't buy the OEM version of the card that apparently won't work in the Mac Pro.