Installing a second drive into a Optiplex 780 pc - YouTube
Supposedly just for XP, but I got carried way... (Dell Optiplex 780 SFF) - Build Logs - Linus Tech Tips
HDD/SSD Metal Mounting Kit for Dell Optiplex 780 DT? | DELL Technologies
Restored Dell Optiplex 780 Small Form Factor Desktop PC with Intel Core 2 Duo Processor, 8GB Memory, 1TB Hard Drive and Windows 10 Pro (Monitor Not Included) (Refurbished) - Walmart.com
M.2 SSD Installation Instructions for a Dell Inspiron Desktop
M.2 SSD Installation Instructions for a Dell Inspiron Desktop
Restored Dell OptiPlex 780 Tower Desktop PC with Intel Core 2 Duo Processor, 4GB Memory, 250GB Hard Drive and Windows 10 Pro (Monitor Not Included) (Refurbished) - Walmart.com
Richard Andrew Evans (Brit, Actor, Musician USA ) on X: "DELL Optiplex 7440 ALL IN ONE, you can add an NVME SSD at anytime. Ideally remove the 2.5" Hard Drive and replace
DELL OPTIPLEX 780 WIFI DVD-RW 3.0GHz 4GB Ram 500GB Hard Drive W/ Windows 10 Pro | eBay
SOLVED: Can I add a 2tb hard drive to my optiplex 7010 - Dell Desktop - iFixit
Dell OptiPlex 780 Upgrade Linux Install | Disgruntled Duck