CHIPAL 2nd HDD Caddy 9.5mm SATA 3.0 for 2.5" 2TB SSD Case Hard Disk Enclosure for Lenovo ThinkPad T400 T500 W500 T410 CD DVD ROM|HDD Enclosure| - AliExpress
Tutorial: How to Upgrade T410/T420/400 Thinkpad Laptop to 8GB - YouTube
Lenovo Thinkpad T410 Upgrades and Benchmarks 500GB ADATA SSD, 8GB DDR3, New Battery, and More - YouTube