[10 Years]

USB-Logo History of USB2LPT 25pol. SubD-Buchse

There are a lot of versions before the current 1.6 and 1.7. See following table for self-make instructions.

Photo of evaluation system
Evaluation system
USB2LPT – Evaluation system
  • September 2004, Quantity: 1
  • AN2131SC - Full Speed
  • Handmade PCB (included in Diploma work of Eik Arnold)
  • 99% compatible to “Original Version” and “Revision 1”, only pull-up resistors are missing
  • A handy utility for troubleshooting is the LPT checker
  • Do not clone! Errors on PCB!
Photo of device
The “Original”
USB2LPT Release 1.0
  • February 2005, Quantity: 10
  • AN2131SC - Full Speed
  • Handmade PCB (two-sided), manual via, hand-soldering
  • Dongle housing, USB-B receptacle, 25 pin SubD receptacle
  • Wire for extra 5V supply included
  • Recommended to clone (small changes necessary)
    Attention: AN2131SC is about to be discontinued.
First Revision
First Revision
USB2LPT Release 1.1
  • April 2005, Quantity: 18
  • AN2131SC - Full Speed
  • 100% compatible to “Original Version”
  • Industrial PCB (two-sided, 350 µm), hand-soldering
  • Plug housing, USB-MiniB receptacle, 25 pin SubD receptacle
  • Do not clone! Cumbersome! Errors on PCB!
Second Revision, High Speed
Second Revision
USB2LPT Release 1.2 — called USB2LPT2 too
  • August 2005, Quantity: 33
  • CY7C68013A-56PVXC (FX2LP) - High Speed (not firmware-compatible to predecessor, other chip)
  • Industrial PCB (two-sided, 250 µm), hand-soldering
  • Plug housing, blue High-Speed LED, USB-MiniB receptacle, 25 pin SubD receptacle
  • Cloning OK, but maybe you will await next revision
Third Revision
Third Revision
USB2LPT Release 1.3
  • June 2006, Quantity: 132
  • CY7C68013A-56LFXC (FX2LP) - High Speed (firmware-compatible to predecessor with new firmware, other wiring)
  • Industrial PCB (two-sided, 150 µm), reflow soldering
  • Plug housing, blue High-Speed LED, USB-MiniB receptacle, 25 pin SubD receptacle
  • Professional clones recommended
Fourth Revision
Fourth Revision
USB2LPT Release 1.4
  • April 2007, Quantity: 101
  • Very similar to revision 1.3 above
  • Three extra lines for using as 20-pin I/O device
  • Professional clones recommended
Fifth Revision
Low-Speed Revision
USB2LPT Release 1.5
  • 2007, Quantity: 11
  • ATmega8 or ATmega48: ultra cheap. Idea from IgorUsbPlug. Fast as Full-Speed.
  • Firmware implementation using USBDRV by extern Objective Development
  • Same Windows driver, slightly modified .INF file (already done and available)
  • PCB only, very easy to populate
  • Cloning recommended – useful where low-speed is sufficient
Sixth Revision
Another Low-Speed Revision
USB2LPT Release 1.6
  • 2008, Quantity: 750
  • Crystal removed! Thanks to continued work of extern Objective Development
  • Integrated bootloader for firmware update via USB
  • Same as Release 1.5 but 2 diodes instead of voltage regulator when 3.3V operation of ATmega controller is needed for some application
  • PCB, very easy to populate, and devices
  • Cloning recommended – useful where low-speed is sufficient
Seventh Revision
High-Speed again
USB2LPT Release 1.7
  • 2008, Quantity: 750
  • Functionally equal to Release 1.4
  • Changed voltage regulator to conform the USB idle-mode power consumption
  • Professional clones recommended
Centronics adaptor
Centronics adaptor
Centronics adaptor
  • 2007, Quantity: 0
  • For all USB2LPT revisions, to connect to a 36-pin Centronics receptacle
  • Source (Eagle PCB)


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