CMS 8GB (2X4GB) DDR3 8500 1066MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Compaq Presario Cq56-109Sl, Cq56-109So - A35 at Amazon.com
OFFTEK 4GB Replacement Memory RAM Upgrade for HP-Compaq Presario Notebook CQ56-102SA (DDR3-10600) Laptop Memory at Amazon.com
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
4GB DDR3-1333 RAM Memory Upgrade for The Compaq HP Presario CQ56-115DX (Genuine A-Tech Brand) at Amazon.com
616449-001 623909-001 Motherboard For Compaq Presario Cq56 Hp G56 Daax3mb16a1 - Laptop Motherboard - AliExpress