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Chapter 2 System Overview
2.4.4 SYSTEM MEMORY
These systems use the NVidia IGP component that supports DDR SDRAM. The system board
provides two sockets that accept industry-standard unbuffered DDR DIMMs.
The D315 system uses the IGP-64 controller that supports 64-bit PC2100 DDR memory and a
maximum of 1 gigabyte of memory.
The d325 system uses the IGP-128 controller supporting 128-bit (when two DIMMs are installed)
PC2700 DDR memory and a maximum of 2 gigabytes of memory.
2.4.5 MASS STORAGE
All models include a 3.5 inch 1.44-MB diskette drive installed as drive A. Most models also
include a CD-ROM and a 20- to 80-GB hard drive. Standard hard drives feature Drive Protection
System (DPS) support. All systems provide two (one primary, one secondary) PCI bus-mastering
Enhanced IDE (EIDE) controllers integrated into the chipset. Each controller provides
UATA/100 support for two drives for a total of four IDE devices, although the form factor will
determine the actual number of drive spaces available.
2.4.6 SERIAL AND PARALLEL INTERFACES
This system includes one serial port and a parallel port accessible at the rear of the chassis. The
serial interface is RS-232-C/16550-compatible and supports standard baud rates up to 115,200 as
well as two high-speed baud rates of 230K and 460K, and utilizes a DB-9 connector. The parallel
interface is Enhanced Parallel Port (EPP1.9) and Enhanced Capability Port (ECP) compatible, and
supports bi-directional data transfers through a DB-25 connector.
2.4.7 UNIVERSAL SERIAL BUS INTERFACE
The Universal Serial Bus (USB) interface supports hot plugging/unplugging (Plug ’n Play)
functionality for six USB ports. Two ports are accessible at the front of the unit and four ports are
available at the rear of the chassis. The D315 model provides USB 1.1 support while the d325
model provides 2.0 support.
Compaq D315 and hp d325 Personal Computers
Featuring the AMD Athlon XP Processor
Second Edition – March 2003
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