CI-6759A USB/Serial Adapter not properly identified if attached during startup.

My CI-6759A USB/Serial Converter is not detected by Capstone unless I disconnect it and reconnect it after computer reboot.


Related Products:

*This article only applies to 750 interfaces connecting through the CI-6759A USB/Serial Converter. If your 750 interface has a USB symbol on the front this article does not apply.


 Compatibility Details:


  • The CI-6759 (non-A) model is not compatible with Capstone software. You must replace with the CI-6759A updated model.
  • CI-6759is compatible with Windows 7 and Windows 10, and Mac OS 10.10 or higher



PASCO Solution:

If your CI-6759A is not properly identifying without being unplugged and reconnected, this indicates that your CI-6759A needs a firmware update. 



  1. Install the latest version of PASCO Capstone
  2. Turn on the ScienceWorkshop interface.
  3. Connect the CI-6759A adapter to a USB port 
  4. Run Capstone
  5. Click the Hardware Setup button in on the left tool palette
  6. Click Choose Interface.
  7. Select PASPORT Interface
  8. Capstone should prompt you to update the firmware on the device. Allow the firmware update to proceed
  9. When finished, select Choose Interface and select either ScienceWorkshop 500 or ScienceWorkshop 750
  10. Close Capstone
  11. The next time your computer is rebooted, the CI-6759A should be detected without disconnecting it from the USB port


If this does not resolve the issue try connecting the CI-6759A to a USB2 port. Occasionally USB3 ports are not compatible with the CI-6759A adapter.


Date Created: 11/25/2019
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