By holding down both the ^ andЎ button on the monitor for 3 seconds or longer again, you can unlock the operation buttons. OSD information HDMI1, HDMI2, DVI-D, D-SUB, DISPLAYPORT Current selection (DVI-D) Resolution Horizontal/vertical frequency Audio input mode Picture size mode OPTION (OPS-compliant computer) Current selection ((OPTION (OPS-compliant computer))Resolution Horizontal/vertical frequency Audio input mode Picture size mode YPbPr Current selection (YPbPr) Audio input mode Picture si