Epson Apex 20020 - Manual (Page 150)

Interfaces
Serial
Printer
Option slots
Speaker
Clock/calendar
RAM
Power Supply
RS-232C, programmable, asynchronous,
DB-9P male connector
Standard 8-bit parallel, DB-25S female
connector
Six IBM PC/AT-compatible input/output
expansion slots (three 8-bit and three
16-bit): one 8-bit slot occupied by
parallel/serial interface and diskette
controller card; one 8-bit slot occupied by
multi-graphics adapter card; one 16-bit
slot occupied by the hard disk controller
card; three available
Internal, programmable
Real-time clock, calendar, and 64-byte
CMOS RAM for configuration; battery
backup
Switching type, fan-cooled, 115/230
VAC, 50/60 Hz 140 W (peak); +5 VDC,
+ 12 VDC, -5 VDC, -12 VDC; externally
switch-selectable
Mass Storage
Three drives maximum, configurable
using three half-height slots (horizontal
mounts); two externally accessible
Standard 5 ¼-inch, half-height diskette drive;
double-sided, high-density, 1.2MB storage
capacity