ulpt(4) USB printer support


To compile this driver into the kernel, place the following line in your kernel configuration file:
device ulpt

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf5:



The driver provides support for USB printers that follow the printer bi- or uni-directional protocol. The bits in the minor number select various features of the driver.

Minor Bit Ta Function
"64" Ta Do not initialize (reset) the device on the port.

Some printers cannot handle the reset on open; in case of problems try the unlpt device.


The driver provides support for USB printers and parallel printer conversion cables, including the following:

  • ATen parallel printer adapter
  • Belkin F5U002 parallel printer adapter
  • Canon BJ F850, S600
  • Canon LBP-1310, 350
  • Entrega USB-to-parallel printer adapter
  • Hewlett-Packard HP Deskjet 3420 (P/N: C8947A #ABJ)
  • Oki Data MICROLINE ML660PS
  • Seiko Epson PM-900C, 880C, 820C, 730C


device with reset
device without reset


The driver appeared in Nx 1.4 . This manual page was adopted from Nx by An Tom Rhodes Aq [email protected] in April 2002.