100% Working For Dell Desktop Motherboard For Optiplex 980 Small Form Factor Sff Mainboard C522t 0c522t C518t Lga1156 Q57 - Buy C522t 0c522t C518t Lga1156 Q57 Product on Alibaba.com
Amazon.com: Genuine Dell OEM Dell Optiplex 790 Motherboard Mainboard Systemboard for Desktop DT Model Chassis, Dell Part Number J3C2F 0J3C2F, Intel LGA1155 : Everything Else
Optiplex 5-pin power button assembly pinout - Dell Community