Epson AcuLaser MX20DNF - Manual (Page 24)

Rear view
*
a rear cover b AC inlet
c power switch d telephone interface connector *
- LINE: Connects with the phone cord
- EXT: Connects with an external telephone
e network interface connector f USB interface connector
* DNF model only
Epson AcuLaser MX21/MX20 Series User's Guide
Getting to Know Your Printer 24