Zopsc DDR2 4GB RAM 800MHz Memory Module for AMD CPU Stable Fast Data Transmission 240PIN for High Anti-Interference and Antistatic for Desktop Computer, Plug and Play at Amazon.com
Raspberry Pi Compute Module 4 with WiFi 4GB RAM 16GB Flash - OKdo
00D5026 IBM | Used & Refurbished
4GB Memory for Synology RackStation RS2416+ DDR3-1600 SODIMM RAM Module (PARTS-QUICK Brand) at Amazon.com