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The days of 36 pin centronics connectors and 25 pin parallel port connectors are long gone. Today, almost all computer peripherals are connected by a simple standard USB connector. A USB printer cable is slightly different than a USB cable that is used with an external hard drive, scanner or additional monitor.

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The days of 36 pin centronics connectors and 25 pin parallel port connectors are long gone. Today,

almost all computer peripherals are connected by a simple standard USB connector. A USB printer

cable is slightly different than a USB cable that is used with an external hard drive, scanner or additional

monitor. The USB connector was developed to solve all the problems that did persist when every device

seemed to have its own unique port and connector.

Today, the USB, Universal Serial Bus is the principal way of connecting all external computer

components. The connector replaces the old-school approach which was to have a different connector

for every device. A printer had different connectors than a keyboard and a keyboard had different

connectors than a mouse and on it went. The USB port can now take any peripheral and in a matter

of just a few seconds, identify the device, install the driver and the device is ready for use. The USB

standard has allowed most computer manufacturers to eliminate parallel ports on their machines.

It was just stated that USB is a standard that can be used on all external computer hardware; this is

true except in the case of a USB printer cable which is somewhat different. A USB printer cable has two

different ends; the end that plugs into the host computer is a standard USB connector, easily identified

by the trident marking on the molding. The end that plugs into the printer is different, the connector

is square and the corners are rounded. Although this is the standard, periodically one will see different

variants. The variant that is most common is a small connector which allows the interface between the

computer and small devices such as digital cameras and cellular smart phones.

In many cases the manufacturer of the printer does not include the USB printer cable with the machine;

it is up to the buyer to supply it. It is important to know that any USB cable which has the standard

connectors will work with any printer, regardless of the manufacturer.

From a purely technical point of view, USB printer cables are superior to a parallel printer cable as it

can be much longer. This fact makes it very easy to wire an office. A USB connection is also a hot-swap

connector meaning it can be disconnected from one device and instantly be used for a different device,

all that has to happen is the drivers for the new device have to be identified. In the past, when plugging

into a parallel port the computer had to be re-booted.

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Thomas Supplier
Datacomm Cables is a distributor and manufacturer of fiber optic, networking, and ethernet cable and stocks cabinets, racks and patch panels.
Datacomm Cables Inc. 120 Marcus Blvd Deer Park, NY 11729 Ph: 1-631-617-5190