Panduit PTR3E - Manual (Page 26)

REAR PANEL
AC Input: Input 115V 50/60 Hz connector. Use the cable
provided.
AC Fuse: Input power protection. Type 3A/250V.
Interface Slot: Connector for Plug-In Interface Module
Memory Card Slot: Connectors for optional PCMCIA Memory Cards.
(Inside Side Cover)
EXT: External signal connector, AMP 57-60140.
DC 5V: Power for accessory items.
18
Section 2. Installation
Fuse
EXT Port
Connector
Parallel Port
Connector Memory Card
Option
Fan Fold
Access Panel
AC Power In