As computer manufacturers begin to phase out old standards (e.g. IEEE 1284, RS-232), there is an increasingly large base of computer users who want to use their old Hewlett-Packer parallel printer with newer USB-only laptop and desktop systems. They purchase a USB to Parallel adapter, only to find that the parallel end doesn’t fit on their HP printer. What's the problem?

In 1992, citing compact size and a simple connection to the printer, Hewlett-Packer decided to go with the IEEE 1284C connector, also known as mini- or micro-centronics. However, this connection has proved to be largely unpopular with other manufacturers, resulting in an interface that is nearly unique to HP printers.

As the IEEE 1284 standard became outdated in favor of USB, adapters sprang up to fill the gap between the older parallel printers and newer USB-only computers. However, manufacturers of these adapters went with the most popular printer connector: CEN-36 or centronics, which is considerably larger in size, although comparable in capability to the mini-centronics connection. So where does this leave those with old but useable mini-centronics parallel HP printers?

The answer is found in the centronics to mini-centronics adapter. This adapter converts a larger-sized centronics connection to the smaller, more compact mini-centronics end, allowing people to connect their parallel HP printers to their newer computers. A word of caution: the USB to parallel adapter is still necessary to complete the connection because the conversion from parallel to USB must still be made.

The contronics to mini-centronics adapter is a niche product that can be difficult to find, but it represents the best solution for those wanting to hold on to that old HP printer.