2nd SATA HDD SSD Hard Drive Optical bay Caddy Frame Adapter for Dell Optiplex 390 790 3010 3020 + Dell Latitude 1570 AD-7580S - AliExpress
Amazon.com: Computer 2nd HDD SSD Hard Drive Caddy for Dell Optiplex 790 780 990 7010 755 3020 960 7020 SFF Small Form Factor Desktop PC, SATA3 Second Solid State Disk Enclosure, DVD Optical Bay Replacement : Electronics
Dell OptiPlex 390 790 990 3010 7010 9010 SFF 3.5" DVD HDD Hard Drive Caddy Cage | eBay
Dell Optiplex 790 Desktop Intel Core i5 2400 CPU @ 3.10GHz 8GB RAM No
How to install SSD on Dell OptiPlex 790 Desktop - YouTube