Epson User Manual page 4

Jumper Settings
The jumpers on the system board have been renumbered, as shown
in the tables below. The factory default settings are indicated by an
asterisk (*).
Miscellaneous jumper settings
Parallel port ECP mode DRQ jumper settings
CPU voltage jumper settings
CPU voltage
3.3V
3.45V
3.6V
4.0V
5.0V
JP18
3-4
5-6
7-8
9-10
1-2
3