These units are in good condition with perfect print head output. 

Shipping Labels Printed with Simplicity and Speed

Zebra’s ZP 450 thermal printer was designed exclusively for parcel/post
labeling. The economical, compact ZP 450 offers unparalleled ease of
use, and, at 5 inches per second, is one of the fastest direct thermal
desktop printers in its class. Feature-rich to meet customer needs, the
ZP 450 builds on Zebra’s proven service to the parcel/post industry.

Easy to Use and Maintain

The ZP 450 is the simplest printer to load, install, operate and
maintain—from loading the media, installing the software, printing a
label, and cleaning printheads. In addition, the ZP 450 Windows® driver
simplifies management of the printer.

Advanced, Sturdy Design

The advanced features and durable design of the ZP 450 make it a
great value. It includes an integrated power supply that eliminates the
bulky power adapter, sturdy double-walled construction, improved print
quality, and better sensing techniques to handle media variability.