Epson Progression 4 User Manual page 13

Introduction
Your new Epson
offering flexibility and expandability in a compact design. It
provides the following features:
486SX/33, 486DX2/50, or 486DX2/66 microprocessor
4MB of internal memory, expandable to 128MB
System and video BIOS shadow RAM
8KB of internal processor cache
VirtualCache™-the Epson proprietary memory
architecture which allows the system to use all its system
memory as a virtual cache pool
Integrated VGA (video graphics array) controller with
Wingine™ video technology developed by Chips and
Technologies
Math coprocessor built into the 486DX2/50 and 486DX2/66
microprocessor chips
Built-in VGA port
Two built-in serial ports and one built-in parallel port
Built-in IBM
Four 16-bit (or 8-bit) ISA option slots
Support for up to three mass storage drives
Password security.
®
computer is a fast, high-performance system
®
for Microsoft
®
PS/2™ compatible keyboard and mouse ports
® ®
Windows users