Acer X221 Service Guide - Page 48

Proprietary connecting of DVI box The PIN assignment of the 24 pin DVI-D connector / cable is as follows: PIN Signal 1 TMDS data22 TMDS data2+ 3 TMDS data2 shield 4 NC 5 NC 6 DDC clock 7 DDC data 8 Not connected 9 TMDS data110 TMDS data1+ 11 TMDS data1 shield 12 NC 13 NC 14 +5V 15 Ground (return for +5 V and H/V sync) 16 Hot plug detect 17 TMDS data018 TMDS data0+ 19 TMDS data0 shield 20 NC 21 NC 22 TMDS clock shield 23 TMDS clock+ 24 TMDS clock- - 48 -