Acer Aspire X1420G Acer Aspire X1400 and X1420 Desktop Series Service Guide - Page 81

AUDIOF1: Front Panel Audio header This header allows the user to install auxiliary front-oriented microphone and line-out ports for easier access. Pin Signal Name 1 PORT 1L 3 PORT 1R 5 PORT 2R 7 SENSE_SEND 9 PORT 2L Pin Signal Name 2 AUD_GND 4 PRESENCE# 6 SENSE1_RETURN 8 KEY 10 SENSE2_RETURN USBF1~3: Front Panel USB headers The motherboard has two USB ports installed on the rear edge I/O port array.Additionally, some computer cases have USB ports at the front of the case. If youhave this kind of case, use auxiliary USB connector to connect the front-mountedports to the motherboard. Pin Signal Name 1 USBPWR 2 USBPWR 3 USB_FP_P0- 4 USB_FP_P1- 5 USB_FP_P0+ 6 USB_FP_P1+ 7 GND 8 GND 9 Key 10 USB_FP_OC0 Function Front Panel USB Power Front Panel USB Power USB Port 0 Negative Signal USB Port 1 Negative Signal USB Port 0 Positive Signal USB Port 1 Positive Signal Ground Ground No pin Overcurrent signal Aspire AX1400 Service Guide 73