Adding a aftermarket hard drive caddy in the optical bay (T61) - Thinkpads Forum
9.5mm IDE Optical Bay Hard Drive Adapter Caddy - Walmart.com
Amazon.com: Storite Upgraded Version SATA Optical UltraBay 2nd Hard Drive Caddy with SSD or HDD for 9.5mm Universal CD/DVD Slot : מוצרי חשמל
UltraBay SATA Adapter for T440p
41U3148 IBM Storage Accessory
Jeyi Q8 Universal 2.5' 2nd 12.7mm Ssd Hdd Sata Hard Disk Drive Hdd Caddy Adapter For 12.7mm Height Cd Dvd Rom Optical Ultrabay - Hdd & Ssd Enclosure - AliExpress
New 2nd Hard Drive Caddy Adapter ultrabay slim for Lenovo ThinkPad T430s T430si | eBay
Ultrabay Enhanced II Module 2nd HDD for Lenovo ThinkPad R400, R500, T420, T420i, T430, T510, T510i, T520, T530, W510, W520, W530, W700 12.7 mm SATA III adapter caddy - TheNatural2020 | Amazon
Amazon.com: 2nd HDD SSD Hard Drive Optical Bay Caddy Adapter for Lenovo Thinkpad T400 T410si T410i T420si T430si and x200 x201 x220 UltraBase : Electronics
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41N5661 IBM Storage Accessory
New 2nd Hard Drive Caddy Adapter Ultrabay F Lenovo ThinkPad T500 W500 T400 T410 | eBay
2nd LED HD Hard Drive Caddy Adapter ultrabay slim for Lenovo ThinkPad T400 T400s | eBay
UltraBay 2.HDD SATA HDD Adapter For IBM Thinkpad T420 T510 T520 W510 W520 12,7mm | eBay
File:ThinkPad Ultrabay HDD Adapter.jpg - Wikipedia