8GB DDR4-2666, SO-DIMM, 260 pin, K0 version - QNAP Direct
Best Notebooks Ramaxel RMSA3260ME78HAF-2666 8gb Pc4 2666MHz DDR4 So-Dimm Non-ECC 260 pin 1.2V Ram Memory for Laptop and All in One Desktop Computer ( 8gb Pc4 2666MHz DDR4 So-Dimm) at Amazon.com