Gigabyte A520M S2H (rev. 1.0) — подключение и функции заголовков на материнской плате [18/41]

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14) COM(SerialPortHeader)

The COM header can provide one serial port via an optional COM port cable. For purchasing the optional

COM port cable, please contact the local dealer.

Pin No. Denition Pin No. Denition

1 NDCD- 6 NDSR-

2 NSIN 7 NRTS-

3 NSOUT 8 NCTS-

4 NDTR- 9 NRI-

5 GND 10 No Pin

15) SPEAKER (Speaker Header)

Connects to the speaker on the chassis front panel. The system reports system startup status by issuing

a beep code. One single short beep will be heard if no problem is detected at system startup.

Pin No. Denition

1 VCC

2 NC

3 NC

4 SPK-

DEBUG

PORT

G.QBOFM

16) CI (Chassis Intrusion Header)

This motherboard provides a chassis detection feature that detects if the chassis cover has been removed.

This function requires a chassis with chassis intrusion detection design.

Pin No. Denition

1 Signal

2 GND

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