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Your system contains two Universal Serial Bus (USB) connectors for attaching USB- compliant devices. USB devices are typically peripherals such as keyboards, mice, printers, and computer speakers.

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If you reconfigure your hardware, you may need pin number and signal information for the USB connectors. Figure B-9 illustrates the pin numbers for the USB connectors, and Table B-8 lists and defines the pin assignments and interface signals for the USB connectors.

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1 4

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1

Vcc

N/A

Supply voltage

2

DATA

I

Data in

3

+DATA

O

Data out

4

GND

N/A

Signal ground

 

 

 

 

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The microphone jack (see Figure B-10) can be used to attach a standard personal com- puter microphone. Connect the audio cable from the microphone to the microphone jack. The microphone input is a mono source with maximum signal levels of 89 milli- volts root mean squared (mVrms).

Hardware Configuration Features B-15

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