1TBSATA 6GB/s 2.5" Internal SSD Compatible with Lenovo ThinkPad T440P, T440s, T560, T61 By CMS D18 - Walmart.com
My Decade Driver: a 2008 vintage Lenovo Thinkpad T61! New battery, SATA SSD, and RAM upgrade. A bit sluggish but it works! : r/retrobattlestations
6459-CTO - LENOVO 6459-CTO Lenovo ThinkPad T61P Laptop Core 2 Duo 2GHz/1GB/0HDD POST Broken - Walmart.com
Upgrade Options for Lenovo ThinkPad T61 Laptop - Drive Solutions
Lenovo thinkpad t61 2nd HDD SSD Hard Drive Caddy Adapter for Laptop
I “think” you enjoy this… T61 (256 Gb SSD Debian 10, RAM 4 Gb) and E14 2021 (upgrade with RAM 16 Gb, 1 Tb M.2 for Windows 11 and 256 Gb SSD for Debian 11, all Crucial) : r/thinkpad