Usb Connectors; Microphone Jack; Line-Out Jack; Line-In Jack - Dell Precision 410 User Manual

USB Connectors

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.
If you reconfigure your hardware, you may need pin
number and signal information for the USB connectors.
Figure B-8 illustrates the pin numbers for the USB
connectors, and Table B-7 lists and defines the pin
assignments and interface signals for the USB
connectors.
1
2
1
1
Figure B-8. Pin Numbers for the USB
Connectors
Table B-7. Pin Assignments for the USB
Connectors
Pin Signal I/O
1 Vcc N/A
2 DATA I
3 +DATA O
4 GND N/A

Microphone Jack

The microphone jack (see Figure B-9) can be used to
attach a standard personal computer microphone.
Connect the audio cable from the microphone to the
microphone jack. The microphone input is a mono source
USB
4
4
Definition
Supply voltage
Data in
Data out
Signal ground
with maximum signal levels of 89 millivolts root mean
squared (mVrms).
Figure B-9. Microphone Jack

Line-Out Jack

The line-out jack (see Figure B-10) can be used to attach
most computer speakers. The line-out jack is amplified,
so speakers with integrated amplifiers are not required.
Connect the audio cable from the speakers to this jack.

Figure B-10. Line-Out Jack

Line-In Jack

The line-in jack (see Figure B-11) can be used to attach
record/playback devices such as cassette players, CD
players, and VCRs. Connect the line-out cable from any
of these devices to the line-in jack on the back of your
computer.

Figure B-11. Line-In Jack

Hardware Configuration Features B-9