Max Length of serial cable from bottom hand control to skyfi3

SkyFi3 to CGX mount to run SkySafari 6 pro

I have a need for this serial cable length to be 25'.

Anything over 15 and telescope is erratic, i understand that.

Question is can I use a USB 2 active cable?. Will that work?

I have a USB 3 active cable and unit does not work with it.

Thank you

Phillip

phillip@mybabcock.com

Celestron CGX mount