2 SK Hynix Korea 4GB Ram Sticks (*Lot of 2, 8GB total*) - 1Rx8 HMA451U6AFR8N-TF | eBay
4GB Stick for IBM-Lenovo ThinkCentre M Series M78 Small Form Factor M78 Tower M93p Small Form Factor M93p Tower. DIMM DDR3 Non-ECC PC3-12800 1600MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com