DELL 87G1H for Dell Optiplex 790 990 SFF small case USB module + audio front IO panel 1pcs|Computer Cables & Connectors| - AliExpress
Optiplex 790 Failure To Recognize External Drive Using Simple External Port Connector - Dell Community
Amazon.com: DELL Optiplex 790 SFF Small Form Factor Business Desktop Computer PC (Intel Dual Core i3 CPU 3.3GHz, 4GB DDR3 Memory, 500GB HDD, DVDRW, Windows 10 Professional) (Renewed)'] : Electronics