16GB KIT (2 x 8GB) for IBM Lenovo ThinkPad T Series T420 T420i T420s T520 T520i. SO-DIMM DDR3 Non-ECC PC3-10600 1333MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com
the t410s is a super device. I will upgrade the ram to 16gb. sometimes prefer the t410s over the t420 or t430 🙈 : r/thinkpad