This Optional SD Card module help you installing an SD 4.0 card slot to your OptiPlex 5000 5080 5090 SFF Tower Desktop series on the rear panel, connects the I/O board to motherboard, please go to official website find the instructions before installing. Brand NEW and GENUINE from OEM Factory that has never been used if you PURCHASING from DEAL4GO, NOT a PULLED parts. D P/N: T9YCN, 0T9YCN Part Desc: ASSY, FSD, CRD, RDR, SD4.0, D10MTE Condition: Original and NEW condition without original box shipping. Reference list of compatible with Desktop models: - OptiPlex 5000 Small Form Factor Tower Desktop - OptiPlex 5080 Small Form Factor Tower Desktop - OptiPlex 5090 Small Form Factor Tower Desktop What's in the box: 1x SD 4.0 Card Reader Daughter board (REV: A00) 2x Screws