Epson 10020 - Manual (Page 146)

Speaker interface Internal, controlled by timer/
counter
Option slots Five, B-bit IBM-compatible input-
output expansion slots; one slot is
occupied by a display adapter card
and on the Apex 100\20, another
contains the hard disk drive
controller card
Keyboard
Detachable, three positions,
84 sculpted keys
Layout 56-key QWERTY main keyboard,
l&key numeric pad, 10 function
keys (user-definable)
Function keys Three levels (normal/shift/alternate)
user-definable
Mass Storage
Two internal drives maximum
Standard diskette drive 5 1/4-inch; half-height diskette
drive; double-sided, double-density,
36OKB storage capacity
Standard hard disk drive 5 1/4-inch or 3 1/2-inch (5 1/4-inch
frame), half-height internal hard
disk drive; 20MB storage capacity
Optional 3 1/2-inch (5 1/4-inch frame), half-
height diskette drive; double-sided,
double-density, 720KB storage
capacity
B-2 Specifications