Epson 500 Series - Manual (Page 19)

Rear Panel and Left Side
Connecting the AC Adapter
The AC adapter is designed to be used in most countries, as it can
operate in the ranges 100 to 240 VAC, 50 to 60 Hz (autosensing).
Caution
Use only the AC adapter (model number AP-3S25) supplied
with the computer.
If you are using the adapter in a country other than the one where
you purchased your ActionNote, make sure you have the correct
power cable for the electrical socket. See the power cable
specifications in Appendix C for details.
1-4 Setting Up the Computer