All 3 of these may work, but only the first one WILL work…
The Qivicon devices will work, but only under certain circumstances. The problem is that they use modified product IDs, so they will not be detected on a Mac or Windows computer, or on Linux - unless you modify the PIDs (as reported elsewhere)…
This is a Telegesis ETRX357 with slightly modified firmware.
This currently runs standard NCP 5.8.1 firmware.
Again - neither of these will work without modifying drivers to make them recognised by your computer.
So…
It’s not necessarily the best stick, but as things currently stand, it’s the best supported.
No - unfortunately not if you use Windows or Mac. The issue is not with the firmware - it’s with the product codes that your computer uses to install drivers. Linux computers can bypass this as mentioned earlier.
I hope this helps a little at least.