HP xw4400 Service And Technical Reference Guide

3. Unsnap the fan housing from the chassis 2 and lift it out of the chassis 3.
Figure 4-28 Removing the front fan
4. Remove the fan from the fan housing by applying outward pressure on the fan housing while
pushing the fan out of the housing.
Figure 4-29 Removing the fan from the card guide
To replace the front fan, reverse the previous steps, but be sure that the airflow direction arrow on the
side of the fan points to the rear of the chassis.
Battery
The battery that comes with the workstation provides power to the real-time clock and has a minimum
lifetime of about three years.
WARNING! This workstation contains a lithium battery. There is a risk of fire and chemical
burn if the battery is handled improperly. Do not disassemble, crush, puncture, short external
contacts, dispose in water or fire, or expose it to temperatures higher than 140°F (60°C).
ENWW Steps for removal and replacement of components 83

HP xw4400 Specifications

General

Processor	Intel Core 2 Duo
Chipset	Intel 975X
Memory	Up to 8 GB DDR2
Storage	SATA 3.0 Gb/s
Graphics	NVIDIA Quadro FX series
Operating System	Windows XP Professional
Expansion Slots	1 PCI Express x16, 1 PCI Express x1, 3 PCI
Ports	6 USB 2.0, 2 PS/2, 1 serial, 1 parallel, 1 RJ-45
Optical Drive	DVD-ROM