user36750: Some ESP-family cheap boards manufacturers had recently moved to CH9102X serial port chip (from CP2102), and it seems the drivers for CH9102X are hard to find.
Where can I download them?

user36750: It can be found on manufacturer's website: http://www.wch.cn/search?q=CH9102&t=downloads
Please note, that some drivers' downloading pages are only available in Chinese, so make sure you open Chinese (not English) site version.
Windows CDC driver: http://www.wch.cn/downloads/CH343CDC_ZIP.html
Windows SER driver: http://www.wch.cn/downloads/CH343SER_ZIP.html
MacOS driver: http://www.wch.cn/downloads/CH34XSER_MAC_ZIP.html
P.S. For Windows 7 x64 I recommend using the first one (CDC). SER driver didn't work for me because of signing issues.

36750: <p>Some ESP-family cheap boards manufacturers had recently moved to CH9102X serial port chip (from CP2102), and it seems the drivers for CH9102X are hard to find.</p>
<p>Where can I download them?</p>
 36750: <p>It can be found on manufacturer's website: <a href="http://www.wch.cn/search?q=CH9102&amp;t=downloads" rel="nofollow noreferrer">http://www.wch.cn/search?q=CH9102&amp;t=downloads</a></p>
<p>Please note, that some drivers' downloading pages are only available in Chinese, so make sure you open Chinese (not English) site version.</p>
<p>Windows CDC driver: <a href="http://www.wch.cn/downloads/CH343CDC_ZIP.html" rel="nofollow noreferrer">http://www.wch.cn/downloads/CH343CDC_ZIP.html</a></p>
<p>Windows SER driver: <a href="http://www.wch.cn/downloads/CH343SER_ZIP.html" rel="nofollow noreferrer">http://www.wch.cn/downloads/CH343SER_ZIP.html</a></p>
<p>MacOS driver: <a href="http://www.wch.cn/downloads/CH34XSER_MAC_ZIP.html" rel="nofollow noreferrer">http://www.wch.cn/downloads/CH34XSER_MAC_ZIP.html</a></p>
<p>P.S. For Windows 7 x64 I recommend using the first one (CDC). SER driver didn't work for me because of signing issues.</p>
