On many legacy peripherals, the parallel cable utilized both the 25 pin Sub-D connector and the 36 pin Centronics connector. This was a common printer interface and is still in service in great numbers.
With the advent of "intelligent" laser and ink jet printers, the IEEE-1284 bi-directional printer cable was introduced. This parallel interface allows for bi-directional communication resulting in speeds up to 10 times faster than conventional cables.
All our parallel cables feature 28 AWG copper conductors, molded PVC shells and thumbscrews for durability.