Hardware Reference
In-Depth Information
Figure 4.5. Typical LPX system chassis and motherboard.
Another distinguishing feature of the LPX design is the standard placement of connectors on the back
of the board. An LPX board has a row of connectors for video (VGA 15-pin), parallel (25-pin), two
serial ports (9-pin each), and mini-DIN PS/2-style mouse and keyboard connectors. All these
connectors are mounted across the rear of the motherboard and protrude through a slot in the case.
Some LPX motherboards might have additional connectors for other internal ports, such as network
or small computer systems interface (SCSI) adapters. Because LPX systems use a high degree of
motherboard port integration, many vendors of LPX motherboards, cases, and systems refer to LPX
products as having an “all-in-one” design.
The standard form factor used for LPX and mini-LPX motherboards in many typical low-cost systems
is shown in
Figure 4.6
.
