Hi,

I just received a NanoVNA V2 Plus4 and after following all instructions for installation on a Win10 machine (Cypress drivers, VNA-qt app etc.) the VNA is not being recognized by the USB interface. The error message in Device Manager is "Device USB\VID_04B4&PID_0008\USB_DFU requires further installation." This points to either a bad driver or a faulty USB interface.

I've tried to connect on 2 different Win10 boxes, a Win7 box and a Ubuntu 20.4 box, but all attempts fail. It looks to me like a failure of the NanoVNA USB interface.
The box works fine stand-alone but I rely on a PC for file and screen captures. Any comments before I send the unit back to the vendor???

Many thanks in advance.

73
Dave VE3TLY