2GB Black Diamond Memory Module for Compaq Pavilion dm3 Series dm1z-2100 DDR3 SO-DIMM 204pin PC3-10600 1333MHz Upgrade System Specific Memory - Newegg.com
HP Compaq 8200 Elite SFF Core i3-2100 3.1 GHz 8GB DDR3 Ram 250GB Hard Drive Windows 10 (used) - Walmart.com
Arch Memory 4GB 204-Pin DDR3 1333 MHz So-dimm RAM for HP Pavilion dv4i-2100 at Amazon.com