DIGITAL PC 3400/5400 System Reference

This document serves as a comprehensive system reference guide for the DIGITAL PC 3400/5400 series of computers, intended for users responsible for their operation, configuration, and upgrades. It covers initial setup, detailing front and rear panel components, physical security, and connecting various external devices like speakers, headphones, microphones, printers, and USB devices, alongside advice on creating an ergonomic workspace.

A significant portion of the guide is dedicated to using the BIOS Setup Utility, explaining how to configure system settings such as time/date, security features (passwords, boot sector protection), power management, and disk drive configurations. It also provides instructions for internal hardware maintenance and upgrades, including removing the main logic board, replacing the lithium battery, and installing a higher-performance processor.

Furthermore, the document offers detailed guidance on expanding the computer's capabilities by installing additional memory (SIMMs, video memory, MPEG daughter cards), ISA and PCI expansion boards, and various mass storage devices (3.5-inch and 5.25-inch drives) into both low-profile and short-tower chassis, with specific instructions for connecting IDE and SCSI devices. Appendices provide extensive technical specifications, device mapping information (memory, I/O, interrupt, and DMA), and supported video output modes.