Have to install drivers EVERY time....

Hello Arduino Community,

I am having a bit of trouble with some Arduino Nanos. When I plug them in the very first time, they are recognized and I can upload a sketch to them.

The next time I plug them in, they again try to install the proper drivers automatically, but this time fail.

At this point, I go into Device Manger, and install the FTDI drivers manually. The problem is, this installs an new COM port every time I reinstall the drivers. I’m on COM11 now, and it seems a bit ridiculous to get a new COM port for every Arduino I use.

Am I doing something wrong? My Arduino Ethernet and my Arduino Uno don’t give me this problem.

Thank You,


Is that an official Arduino Nano ?
You might have a clone with a counterfeit FTDI chip.

No, they are knockoff Arduino Nanos ($9). I the cheap ones so I can put them in low cost projects. Is this a common problem? Is it fixable?

Some drivers use the counterfeit FTDI chips, other drivers don't use them, and there was a driver that bricked the counterfeit chips. You don't want to go there, thrown them away.
Yes, it is a common problem : EEVblog #676 - RANT: FTDI Bricking Counterfeit Chips! - YouTube

Why did you pay 9 dollars ? The Nano clones are less than 3 dollars on Ebay.

The Nano clones with CH340G usb-serial chips are okay. You need to install the driver : CH341SER.EXE - 南京沁恒微电子股份有限公司

If you really want bad quality clones, don't forget to donate : https://www.arduino.cc/en/Main/Donate