This kit is designed for the DT and MT tower (not SFF or small form factor) desktops. It allows you to connect standard PC case I/O headers to the Dell Optiplex 7010, 9010, 7020, 9020 and Precision T1650 & T1700 motherboards as well as the front USB ports and audio jacks. These are often used to build budget and range gaming PCs using decommissioned office desktops and convert them to work with modern PC cases. These adapters will also get rid of that annoying front panel error on startup. Warning, connecting these adapters in the wrong orientation or with the wrong models could result in damage to your motherboard. Do not use these adapters with models other than the ones mentioned above. INCLUDES: 1X 5/6 Pin Power Button/LED Front Panel Adapter For Dell Motherboards 1x Front Panel/Diagnostic LED & HDD LED Adapter For Dell Optiplex 7010, 9010, 7020, 9020 and Precision T1650 & T1700 Motherboards