PC (D-Sub): X1, Monitor Out (D-Sub): X1, HDMI: X2 (HDCP2.2), USB Type A: X1 (1.5A power), Audio in (3.5mm Mini Jack): X1, Audio out (3.5mm Mini Jack): X1, RS232 (DB-9pin): X1, IR Receiver : X2 (Front / Top), Security Bar: Yes (Security Bar, Kensington Lock)