CHIPAL 2nd HDD Caddy 9.5mm SATA 3.0 for 2.5" 2TB SSD HDD Enclosure for Lenovo ThinkPad T400 T400s T500 W500 T410 DVD ROM CD ROM|HDD Enclosure| - AliExpress
Amazon.com: Deyoung 2nd HDD SSD Hard Drive Caddy Adapter for Lenovo Thinkpad T400 T410si T410i T420si T430si and x200 x201 x220 UltraBase : Electronics
Amazon.com: Deyoung 2nd HDD SSD Hard Drive Caddy Adapter for Lenovo Thinkpad T400 T410si T410i T420si T430si and x200 x201 x220 UltraBase : Electronics
Thinkpad T400 Libreboot 160GB SSD 2.4GHz w/ 8GB RAM 6-Cell Bat AC ThinkLight | eBay
2nd Hard Drive HDD SSD Caddy for Lenovo ThinkPad T400 T410 T500 W500 X220 X201 | eBay