Acer EL1800 Technical Information PDF herunterladen (Seite 79)

F_USB1~3: 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 you have this kind of case, use auxiliary USB connector to

connect the front-mounted ports to the motherboard.

Pin Signal Name Function

1 USBPWR Front Panel USB Power

2 USBPWR Front Panel USB Power

3 USB_FP_P0- USB Port0 Negative Signal

4 USB_FP_P1- USB Port1 Negative Signal

5 USB_FP_P0+ USB Port0 Positive Signal

6 USB_FP_P1+ USB Port1 Positive Signal

7 GND Ground

8 GND Ground

9 Key No pin

10 NC Not connected

Please 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.

SPDIF1: SPDIF out header

This is an optional header that provides an S/PDIF (Sony/Philips Digital Interface) output to digital multimedia

device through optical fiber or coaxial connector.

Pin Signal Name

1 5V analog Power

2 No pin

3 SPDIF digital output

4 Ground

1394A1: Onboard IEEE 1394a header(Option)

Connect the header to any device with IEEE 1394a interface.

Pin Signal Name Pin Signal Name

1 TPA+ 2 TPA-

3 GND 4 GND

5 TPB+ 6 TPB-

7 Cable-Power 8 Cable-Power

9 Key pin 10 GND

1 2 ... 74 75 76 77 78 79 80 81 82 83 84

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Acer EL1800 Technical Information Seite 79