It took me a long time to find this driver. It sould work Us robotics 3com 56k isa modems. modal number is 0613 modem part number 6000758. Use the driver at your own risk I will not be accountable for any mishaps.
You must use winrar to decompress it.
If this driver works for you could you donate 5 dollars to me for all the work I did to find the driver. I'm not chargeing for it. It's just took so long to find it. a lot of hours. You can send 5 dollors to my paypal account at. as is driver.
the five dollors is a donation so it will not be refund for any purpose.