Follow the USB cable from the computer all the way into the control box (some alpha boxes have a USB connection on the outside of the box that go to serial inside of the box). If it ends in a serial port, it is USB Serial if it ends in USB, it is USB, if there is no USB cable from the computer (just a serial connection) then it is plain serial.
Boards 201a and beyond have USB connections directly on the card.
ShopBot Tools, Inc.
3333-B Industrial Drive
Durham, NC 27704
Monday–Friday: 9am–5pm EST
After Hours Tech Support
Monday–Friday: 5pm–9pm EST
Saturday–Sunday: 10am–5pm EST
ShopBot Tools, Inc. is closed New Year’s Day, Memorial Day, July 4th, Labor Day,
Thanksgiving Day and the following Friday, and Christmas Eve and Christmas Day.
Outside of normal office hours, we regularly check for support requests,
email and phone messages. To make sure we can get back to you as soon as possible,
leave a phone number or return email address where you will be available.