This is a used 2 x 2GB kit of DDR3 RAM (4GB total).  It should still function just fine, and I'm only selling it now because I upgraded my RAM, not because there were any issues with it.

CT25664BA1339.C16FKR2

BV11147.7P

2x 2GB 240-PIN DDR3 UDIMMPC3-106

I can't find a listing elsewhere for this exact pair of RAM sticks, so please review the images and the details here to determine if this will work for you.