This Optional module help you install an SD Card Reader slot to your ProDesk and EliteDesk 400 600 800 G4 G5 MT & SFF mini Desktop PC series on the rear panel, connects the I/O board to motherboard, please go to official website find the instructions before installing. CAUTION: There are different type port (Vertical, Bending, 9-pin) of optional module, PLEASE check that the connector of your motherboard BEFORE Purchasing. Brand NEW and GENUINE from OEM Factory that has never been used if you PURCHASING from DEAL4GO, NOT a PULLED parts. Compatible Part Number(s): L02CR001, SX6034 Service P/N: L15895-001 Part Desc: ASSY, USB3.0, SD4, SFF, SD Card Cable overall Length approx: 18.00 cm/7.10-inches Chip: Realtek RTS5342 Condition: Original and NEW condition without original box shipping. Reference list of compatible with Desktop models: - ProDesk 600 G3 SFF Small Form Factor - ProDesk 600 G4 SFF Small Form Factor - ProDesk 600 G5 SFF Small Form Factor - ProDesk 600 G6 SFF Small Form Factor - ProDesk 400 G7 SFF - ProDesk 400 G4 SFF - ProDesk 400 G5 SFF MT - ProDesk 400 G6 SFF MT - ProDesk 405 G6 SFF - ProDesk 405 G8 SFF - EliteDesk 800 G4 SFF - EliteDesk 800 G5 SFF - EliteDesk 805 G6 SFF - EliteDesk 805 G8 SFF What's in the box: 1x SD4.0 Card Reader Board 1x Screw