150PPC-153 User’s ManualD.12 CD-ROM Connector (CN18)Table D-12: CD-ROM connector (CN18)Pin Signal Pin Signal1 Audio_L 2 Audio_R3 GND 4 GND5 IDE RESET # 6 DATA87 DATA7 8 DATA99 DATA6 10 DATA1011 DATA5 12 DATA1113 DATA4 14 DATA1215 DATA3 16 DATA1317 DATA2 18 DATA1419 DATA1 20 DATA1521 DATA0 22 HDD DREQ23 GND 24 IO READ25 IO WRITE 26 GND27 HD READY 28 HD ACK 0 #29 IRQ 15 30 NC31 ADDR1 32 NC33 ADDR0 34 ADDR235 HDD SELECT 0 # 36 HDD SELECT 1 #37 V CC (+5 V) 38 V CC (+5 V)39 GND 40 GND# low active21402012 223919