I've recently bought 2 RB-540 response pads and have failed to make them work properly on Windows 7. I have an older RB-540 model (I think from 2012) which works fine - it appears as a USB Serial port and works with Eprime.
When I plug in the RB-540, it appears as a Lumina keyboard. The USB Serial port does not appear in the device manager. It is possible to use it with E-prime as a "keyboard", but not as a SR Response box.
Would using it as a keyboard likely cause any issues, e.g. with timing?
Is there a way to make it appear as a USB serial port?
Thanks a lot,