Pitney Bowes DM550 Series - Manual (Page 23)

DM500™ and DM550™ Series Digital Mailing System Operating Guide
SV61436 Rev. D 2 - 7
The DM500™ and DM550™ Series System with Optional WOW® Module
Connectors on the Back of the Mailing System Base
USB Ports -
Four USB ports are located on the back, lower right side of the
machine. These provide communications with external devices like a
printer, an external scale, optional power stacker or a PC. If you are con-
necting to your organization’s Local Area Network (LAN), use one of these
USB ports to make the connection. For details, refer to section Connecting
Your Postage Meter to a LAN
in Chapter 6 of this guide.
Serial Port Connector -
One Pitney Bowes serial port connector. This is
for Pitney Bowes use only.
Dual External Device
USB Ports
Serial Port 
Connector