I recently bought a 1.5m USB extension cable to give my toaster a USB connection at the front. 1.5m was the shortest they had. Unfortunately it does not work. The KPA recognises when I plug in the USB stick to the other end of the cable but then gives the error message ‘unknown error’ when I try to import or export rigs. The USB stick works fine when connected directly to the KPA and the USB stick + 1.5m cable works fine when connected to my computer. Anyone had success with a USB extension cable this length, or a shorter cable?
My USB cable is about 25cm and Works Fine. The lenght can be the problem.
Make sure it is a passive cable. Active usb extension cables introduce a hub which is not supported.
I use a passive 6 foot USB extension cable. I've had it for many years. Works fine with the KPA. Is there any other devices causing interference close by?