Dell Precision 610 - Manual (Page 97)

Ethernet cable, which is used in 10BASE-T and 100BASE-TX networks. The network interface controller (NIC) provides all the
functions normally handled by a separate network expansion card. To connect your system to and configure it for use on an
Ethernet network, see "
Using the Network Interface Controller ."
Figure B-8. NIC Connector
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.
CAUTION: Do not attach a USB device or a combination of USB devices that draw a maximum current over 500
milliamperes (mA) per channel at +5 volts (V). Attaching devices that exceed this threshold may cause the USB
ports to shut down. See the documentation that accompanied the USB devices for their maximum current ratings.
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.
Figure B-9. Pin Numbers for the USB Connectors
Table B-8. Pin Assignments for the USB Connectors
Pin Signal I/O Definition
1 Vcc N/A Supply voltage
2 DATA I Data in
3 +DATA O Data out
4 GND N/A Signal ground
Microphone Jack
The microphone jack (see Figure B-10) 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 with maximum signal levels of 89 millivolts
root mean squared (mVrms).