Specifications Winchiphead CH340 / CH341 / HL340 driver¶ The Prolific Winchiphead CH340 / CH341 / HL340 Serial Driver for Apple Mac OS X driver is the reliable interface between your CH340 / CH341 / HL340 based cable and your Mac. The driver supports many CH340 / CH341 / HL340 based dongles and USB interfaces, like clone Arduino’s.

Want to improve this question? Add details and clarify the problem by.Closed 2 years ago.Few weeks ago my Arduino Uno (IDE version 1.8.2) detected the USB port and I was able to do some small IOT projects. I updated my OS to Sierra 10.12.5 and now suddenly the usb serial option has disappeared.I followed this link: where it tells us to download and install the FTDI drivers separately. I tried that but it did not help.Then I came across this post: where the user is having this same problem with MacOS Sierra. He suggested we remove the FTDI drivers and rely on Apple's drivers.

So I removed the FTDI drivers from my Mac so it will use Apple's drivers.Now even after doing all this when I connect my Arduino Uno to my Mac via the USB it does not get detected.I removed the kext and pkg files for the FTDI drivers and deleted them completely, still when I open the System Report I still see the FTDI USB Serial Driver entry.When I go to System Report Hardware USB I see this:What is happening? Did the FTDI drivers got removed? If they did then why wont the serial usb port get detected on Arduino? If they are not removed completely then what did I miss?

Danny krivit edits by mr.k vol. 2 rare. Commissioned by the label with curatorial assistance from yours truly, The Complete Sessions reprises MFC's nine-song 1983 demo cassette (which spawned the aforementioned single) and adds six previously unheard compositions dating from the following year.

Unless you went through the rigmarole of installing the CG340G drivers (and you'd remember doing that, trust me) then it's probably like a genuine Arduino (with an ATMega16U2 chip as the USB interface) - however, is it actually genuine? Only a picture of the board could tell us that (there's telltale signs you can see if you know what you're looking for). If it's not genuine then it could be that the USB interface chip is dead (it may be a cloned chip or a factory reject).–May 28 '17 at 11:26.