This Optional module help you add a HDMI port to your ProDesk and Elitedesk 400 600 800 805 840 G6 G7 G8 G9 MT & SFF Tower mini Desktop PC series on the rear panel, connects the I/O board to motherboard, go to official website find the instructions before installing. Compatible Part Number(s): DA0F91TH6F0 Service P/N: N16838-001, M91021-001, M09364-001 Condition: Original and NEW condition without original box shipping. Reference list of compatible with Desktop models: - ProDesk 400 G6 Small Form Factor - ProDesk 405 G6 SFF - ProDesk 600 G6 SFF MT Tower - ProDesk 680 G6 MT - ProDesk 405 G8 - ProDesk 600 G9 SFF - ProDesk 400 G7 SFF MT - ProDesk 480 G7 MicroTower (MT) - Elitedesk 800 G6 - Elitedesk 805 G6 SFF - EliteDesk 800 G8 SFF - EliteDesk 805 G8 - Elitedesk 840 G8 - EliteDesk 880 G8 - Elite Mini 600 G9 - Elite Mini 800 G9 - Elite SFF 600 G9 - Elite Tower 600 G9 - Elite Tower 800 G9 - Pro Mini 400 G9 - Pro Tower 400 G9 - Pro 400 G9 Small Form Factor - Pro Tower 480 G9 - Engage Flex Mini 10500T, CG5905T, PentG6400T, i310100T, i510500T, i910900T - Z1 Entry Tower G6 G8 G9 - Z2 Tower G5 G8 G9 SFF - Z2 Mini G9 - Z2 SFF G9