This Optional module help you add a SD 4.0 card slot to your Dell OptiPlex 7000 5000 3000 Small Form Factor Tower desktop series on the chassis rear panel, the connector connects the board to mainboard. NOTE: DO NOT PURCHASING IF YOURS IS MFF MT series Desktop, Please check your PC models before PURCHASING. D P/N: TT15C, 0TT15C Alt P/N's: D8_SFF_SD4.0_A00 Condition: Open Box, NEW and ORIGINAL from OEM Factory that has never been used, NOT a PULLED parts. Compatible with Following models: OptiPlex XE3 Small Form Factor OptiPlex 3050 Small Form Factor OptiPlex 3060 Small Form Factor OptiPlex 3070 Small Form Factor OptiPlex 5050 Small Form Factor OptiPlex 5055 Small Form Factor OptiPlex 5060 Small Form Factor OptiPlex 5070 Small Form Factor OptiPlex 5080 Small Form Factor OptiPlex 5090 Small Form Factor OptiPlex 7040 Small Form Factor OptiPlex 7050 Small Form Factor OptiPlex 7060 Small Form Factor Precision 3440 Workstation Precision 3450 Workstation Precision 3460 Workstation Precision 3430 Workstation Precision 3431 Workstation