Product selling point:
Using high-quality materials, the quality is guaranteed.
Designed in full accordance with the USB standard, good compatibility, 85% of the printers can be compatible.
Dedicated chip design, excellent compatibility, stable and reliable data transmission.
Excellent hot-swappable characteristics to prevent traditional live operation from burning down hardware.
Wide range of applications

Instructions:
Connect this USB/25-hole cable to the parallel port printing cable of the printer (do not turn on the power of the printer)
Insert the USB end into the USB port of the computer, then the computer will find the new hardware and automatically identify and install it.
Compatible with standard IEEE1284 printers, support EPP/ECP mode
Compatible with USB V1.1
Support USB full-speed transmission, and the communication rate between the USB port and the bus can reach 12Mbps
Take power directly from the USB bus, support plug and play.
Compatible with USB printer 1.0 standard
Support AppleOS8/OS9 plug and play
Compatible with IEEE-1284 1394 standard Y-130
Support Win95OSR 2.1, WIN98SE/ME/2000/XP and MacOS8.6 to 9

How to use this product: 
Start in the computer--Settings--Printers and Faxes--right-click Properties--choose your appropriate port.