CMS 8GB (2X4GB) DDR3 8500 1066MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Compaq Presario Cq56-115Dx, Cq56-124Ca, Cq56-148Ca - A35 at Amazon.com
Review HP Compaq Presario CQ56 Notebook - NotebookCheck.net Reviews
HP Compaq Presario CQ56-110US RAM Replacement - iFixit Repair Guide
HP Compaq Presario CQ56-103SG - Notebookcheck.net External Reviews
Trying out (for science) Windows 11 on a 15 year old Compaq Presario V3000, what's most probably the oldest Intel based laptop that can technically run it (earlier ones either don't support
A-Tech 4GB RAM for COMPAQ PRESARIO CQ56-219WM | DDR2 800MHz SODIMM PC2-6400 200-Pin Non-ECC Memory Upgrade Module at Amazon.com
4Gb (1X4Gb) Memory RAM Compatible with Compaq Presario Cq56-219Wm Ddr2 Sodimm By CMS (A42) - Computer Memory Solutions
HP Presario CQ56-120SY Laptop Memory RAM & SSD Upgrades