Acer Aspire G5900 Service Guide - Page 79

F_USB1~4: Front Panel USB headers The motherboard has four 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 NC SPDIF_OUT1: SPDIF out header This is an optional header that provides an SPDIF_OUT (Sony/Philips Digital Inter-face) output to digital multimedia device through optical fiber or coaxial connector. Pin Signal Name 1 +5V 3 SPDIF Pin Signal Name 2 KEY 4 GND SPI_DEBUG: SPI_DEBUG header Pin Signal Name 1 CS 3 DI 5 VCC 7 GND Pin Signal Name 2 WP 4 HOLD 6 CLK 8 DO GPIO0~1: Button recovery jumper Pin Signal Name 1 GP36(GP16) 2 GND 71 Chapter 5