Dell Latitude X300 - Manual (Page 5)

AC adapter connector — Attach an AC adapter to the computer and to AC power to convert AC power to the DC power required by the computer. You can
connect the AC adapter with your computer either turned on or off.
The power cable manager can be removed from the AC adapter. For details, see the label that came with your AC adapter.
D/Bay connector
RJ-45 network connector —
Connects the the computer to a network.
The network connector has status lights on both sides.
If the light on the right is off, the media base is not detecting a network connection. Try replacing the network cable. The light on the right
blinks yellow when the network is active.
The light on the left indicates the link speed:
Solid Green — Connection speed is 10 Mbps.
Amber — Connection speed is 100 Mbps.
Yellow —
Connection speed is 1 Gbps.
For information on using the network adapter, see the documentation that came with your computer.
NOTICE: Do not plug a telephone cable into the network connector.
CAUTION: If you are using a multiple-outlet power strip, use caution when plugging the AC adapter's power cable into the power strip. Some
power strips may allow you to insert the plug incorrectly. Incorrect insertion of the power plug could result in permanent damage to your
computer, as well as risk of electric shock and/or fire. Ensure that the ground prong of the power plug is inserted into the mating ground contact
of the power strip.
NOTICE: When you disconnect the AC adapter from the computer, hold the adapter cable connector, not the cable itself, and pull firmly but gently to
avoid damaging the cable.
Connects powered USB devices such as a Dell™ D/Bay.