Acer Aspire T690 Aspire T690/Power FH Service Guide - Page 75

AUDIO2: Front Panel Audio Header Pin Signal Name 1 PORT 1L 2 GND 3 PORT 1R 4 PRESENCE# 5 PORT 2R 6 SENSE1_RETURN 7 SENSE_SEND 8 KEY 9 PORT 2L 10 SENSE2_RETURN 1394A1: Onboard IEEE 1394a header (optional) Pin Signal Name Pin Signal Name 1 TPA+ 6 TPB- 2 TPA1- 7 +12V 3 GND 8 +12V 4 GND 9 Key 5 TPB+ 10 GND SATA1~4: Serial ATA connectors Pin Signal Name Pin 1 Ground 5 2 TX+ 6 3 TX- 7 4 Ground Signal Name RXRX+ Ground R_USB/USB3~4: Front Panel USB headers Pin Signal Name Function 1 USBPWR0 2 USBPWR1 Front panel USB power Front panel USB power 3 USB_FP_P0- USB port 0 negative signal 4 USB_FP_P1- USB port 1 negative signal 5 USB_FP_P0+ USB port 0 positive signal 6 USB_FP_P1+ USB port 1 positive signal 7 GND Ground 8 GND Ground 9 Key No pin 10 USB_FP_OC0 Overcurrent signal NOTE: Make sure that the USB cable has the same pin assignment as indicated above. A different pin assignment may cause damage or system hang-up. 72 Chapter 5