Epson Apex 20020 - Manual (Page 151)

Hard disk drive 3 ½-inch or 5 ¼-inch, half-height internal
hard disk; 20MB or 40MB storage
capacity; ST 506/412 interface
Optional 5 ¼-inch, half-height diskette drive;
double-sided, high-density, 1.2MB storage
capacity
Optional 5 ¼-inch, half-height diskette drive;
double-sided, double-density, 360KB
storage capacity
Optional
Optional
Optional
Keyboard
Layout
3 ½-inch, half-height diskette drive;
double-sided, high-density, 1.44MB
storage capacity
3 ½-inch, half-height diskette drive;
double-sided, double-density, 720KB
storage capacity
3 ½-inch or 5 ¼-inch, half-height internal
hard disk drive.
Detachable, 101 sculpted keys
58-key QWERTY main keyboard;
17-key numeric/cursor pad; 10 cursor
keys; 12 function keys (user-definable);
4 dedicated function keys
Function keys Three levels (normal/shift/alternate),
user-definable
Specifications A-3