UPGRADING REPAIRING PCs

32
Chapter 2—System Components and Configuration
Double high
expandable I/O
Full
length slots
Floppy/IDE
connectors close
to peripheral bays
Figure 2.3 ATX system chassis layout and features.
NLX Motherboard
3 1/2"
Bay
Processor
Single
chassis fan
CPU located
near PSU
Single power
connector
Easy to access
SIMM memory
The replacement for the old LPX low-profile motherboard is the
NLX motherboard (see Figure 2.4). NLX also features built-in ports
and a riser card, but its standard design means that replacement
motherboards should be easier to purchase than those for LPX systems.
A major advantage of NLX systems is that the motherboard is
easy to remove for servicing through a side panel, a feature that
makes NLX-based systems popular as corporate network client PCs.
5 1/4"
Bay
Power
Supply
Figure 2.4 NLX motherboard and riser combination.
Which Motherboard Is Which?
Use Table 2.8 to help determine whether a system is a Baby-AT, an
LPX, an ATX, or an NLX-based system.