Intermec PF4i 사용자 설명서

This printer supports USB v1.1 (also called USB 2.0 full speed). To use 
the USB interface for printing from a PC, you need a special Intermec 
USB printer driver installed in your PC.

The printer is a so called “self-powered device.” We recommend that you 
only connect one printer to each USB port on the host, either directly or 
via a hub. Other devices, like a keyboard and a mouse, can be connected 
to the same hub. If you need to connect more than one Intermec USB 
printer to a host, you should use different USB ports.

Using a USB Class A/B cable, connect the Class A plug to your PC or 
hub and the Class B plug to your printer.

The USB interface is essentially a one-way communication interface and 
is thus not recommended for programming. There is no communication 
setup for the USB port.

USB ("usb1:")