I have built and successfully tested the xyphro’s UsbGpib adapter. The good news is that it is compatible with all popular vendor visa software, that means that it works with NI Visa, Keysight Visa, and Roden&Schwarz Visa. I personally prefer the R&S Visa as its only 59 MB in size and works perfectly but no python visa support. Only the NI Visa software is supported by the Python’s PyVisa library. The adapter is also very fast in terms of data transfer speed, faster than Keysight 82357B adapter and AR488 adapter.
Now the bad news is that the adapter shows up as a USB device and not as a GPIB device that means compatibility is not as great compared to a traditional GPIB adapter. As in Image 1, if a software does not search for USB devices, then xyphro’s UsbGpib adapter will not be detected as shown in image 2. You would have to include the “USB” search string, shown in image 3, for the software to detect the adapter, as shown in image 4. Also you can only connect 1 instrument per adapter and build costs are higher compared to AR488 adapter.