HP Compaq NX9100 Reference Manual page 13

For optimal performance, connect the Expansion Base to an
AC power source using the notebook AC adapter and power cord.
1. Connect the notebook AC adapter to the matching connector
on the Expansion Base 1. Depending on your power
requirements, 3 power connectors are available on the rear
of the Expansion Base.
Connector
Type
Multi-pin
Single-pin
Single-pin
Some 90 W AC adapter connectors have yellow tips. If your
AC adapter cannot connect to the yellow connector on the
Expansion Base, use the blue/black connector.
2. Connect the AC power cord to the AC adapter 2, and then
to the wall outlet 3.
✎
Reference Guide
Power cords and power outlets vary by region and country
Color
No color
Blue/Black*
Yellow*
Getting Started
Label Power
Not labeled Multiple
(90 W
minimum)
1 120 W, 135 W
2 65 W
1–9