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Thread ID: 89142 2008-04-22 04:00:00 Serial port-USB adaptor kbcad (1025) Press F1
Post ID Timestamp Content User
661116 2008-04-22 04:00:00 I have a digitising tablet that is currently connected to my old PC. The tablet has a data connection to a 25 pin female connector, which also has a power supply point (low voltage) on it. A male 25 pin connector fits into the female one and its cable leads to a 9 pin female connector that plugs into the back of the PC. (serial port?)
I want to use the digitiser on my new PC which requires a USB input.
Can someone please advise how to achieve this. All help much appreciated. KB.
kbcad (1025)
661117 2008-04-22 04:11:00 Get a COM (short for Communications port) to USB Adaptor.

Like this from DSE (www.dse.co.nz)
jwil1 (65)
661118 2008-04-22 06:15:00 Thanks, jwil1 - will follow this up. KB. kbcad (1025)
661119 2008-04-22 21:52:00 Had a look at DSE site. The adaptor shown did not appear to have the right connection. I need USB at one end of cable and a 25 pin male at the other end. KB. kbcad (1025)
661120 2008-04-22 22:28:00 You can get gender changers at DSE $10 (www.dse.co.nz). jwil1 (65)
661121 2008-04-22 22:46:00 EDIT: Are you sure it's 25-pin?

Serial ports normally have 9 pins

Do a google image search and find an image that matches the port on your device.
jwil1 (65)
661122 2008-04-24 06:04:00 Normal ("RS232") serial connectors are 25-pin. :D

It's only because IBM didn't have room for 2 25-pin connectors on one of their backplane plates that they started using the 9-pin ones. :(

Most USB to serial converters have a 9-pin plug on the RS232 side. Your present 25M to 9F adapter cable will fit that. If you don't like the extra cable length, you could use a 25M to 9F adapter plug (be careful when selecting one of these: 25F to 9M ones are available, too).

The digitiser will "probably" work on the USB to serial adapter. ;)
Graham L (2)
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