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Choosing The Correct Interface - Parallel or Serial? If you are unsure what a serial or parallel interface looks like, there are pictures below. Pay closest attention to those that read 'printer side' which is the best way to compare if you are adding or replacing an existing printer. Click on the pictures to enlarge them and get a better look. Replacing an Existing Printer If you are replacing an existing printer, or adding another one, here are some tips: Look at the pictures below to verify the correct interface for the printer. Look at the connecter on the bottom or back of your existing printer. Try and find the complete model number of the printer on the bottom or side. It may be best to write down all the numbers on the sticker. Click here to see an example. Now that you have a manufacturer, a model number, and the right interface, you should be able to find the printer you need. If you are having trouble locating a match, contact us! We will be glad to help you find the printer you need. We carry THOUSANDS of products! Call us toll free at 888-801-7282. You can also click the 'Contact Information' button on the left, and request information by email. Click the picture to enlarge them |
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| Serial / RS232 Interface - PRINTER SIDE Connector This is the printer connector that is on Serial Interface printers. | |
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| Serial / RS232 Cable, PRINTER SIDE This is what the cable most often looks like that plugs into a serial interface printer. | |
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| Serial / RS232 Cable, PC SIDE This is what the other end of a Serial Printer cable normally looks like. This is the PC or POS end of the cable. There is also a DB25 type that looks exactly the same but is wider instead (25 holes or DB25 Female connector). | |
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| Serial / RS232 Interface - PC SIDE Connector DB9 This picture shows the PC side DB9 Serial/RS232 connector. A DB25 looks EXACTLY the same, but with 25 pins instead of 9. | |
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| Parallel / Centronics - PRINTER SIDE Connector About a 1/2in high and 2.5in wide. The connector is much larger than a serial interface. Notice the 1/8in slot running through the middle of the connector. Click the picture for a better look. | |
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| Parallel / Centronics Interface - Cable, PRINTER SIDE This is the Parallel Interface Cable for the printer side. It is much larger than a serial interface cable. | |
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| Parallel / Centronics Interface - CABLE, PC SIDE This is the POS or PC SIDE of the Parallel Interface Cable. This is a DB25 Male connector, or has 25 pins. | |
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| Parallel / Centronics Interface - PC SIDE Connector This is where mistake are often made. The port here looks exactly like the PRINTER SIDE port for a serial interface. This is on the computer side. Always look at the PRINTER CONNECTOR to be SURE! | |
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