Epson 4000 - Manual (Page 12)

Your new Epson ® ActionDesk™ 4000 computer is a fast,
high-performance, all-in-one system offering flexibility and
expandability in a compact design. It provides the following
features:
486SX/25 MHz, 486DX/ 33 MHz, 486DX2 / 50, or
486DX2/66 MHz microprocessor
4MB of internal memory, expandable to 64MB
System and video BIOS shadow RAM
8KB of internal processor cache, with support for 64KB,
128KB, or 256KB of external cache
1MB of on-board video memory, expandable to 2MB
Math coprocessor built into the microprocessor on the DX
and DX2 systems
Local bus video with True Color support, which enables
your monitor to display up to 16.8 million colors
High-speed, 32-bit local bus IDE hard disk drive interface
Built-in VGA port
Two built-in serial ports and one built-in parallel port
One built-in IBM ® PS/2™ compatible keyboard port and
one built-in PS/2 compatible mouse port
Three 16-bit, full-length and two S-bit, half-length ISA
option slots
Introduction 1