I have a recently purchased EQ6-R Pro connected to an asiair plus running the latest FW (2.1.1). I use a printer USB B cable connected to one of the asiair's USB 2.0 ports with nothing else plugged in (no Wi-Fi dongle, no handbox), mount set to the "SkyWatcher AZ-GTi/SynScan WiFi" driver and 115200 baud. Works flawlessly, the other synscan drivers failed.