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Hi. If you bough an new Arduino but you receive "Unknown USB device(Device Descriptor Request Failed)" then this tutorial is for you. And also sorry for slovak language in images.

So let's start!

Step 1: Open Device Manager

In Windows 8 or 8.1 press "Start logo + X" and select Device manager (Správca zariadení).

Step 2: Find Device

Find device that says "Unknown USB device(Device Descriptor Request Failed)" and go to next step. You can also receive Unknown device (Neznáme zariadenie). So next step ahead..

Step 3: Update It!

Right-click and update device's driver.

Step 4: Manually on It

Hit 2nd option (Find driver manually).

Step 5: Again...

Press find manually

Step 6: Select Type

Select "COM Ports" or similar

Step 7: From HDD

Hit from HDD and then choose path to folder. Default is "C:\Program Files (x86)\Arduino\drivers" on 64-bit.

On 32-bit choose "C:\Program Files\Arduino\drivers"

If you have Arduino Nano or similar with FTDI chip (NOT an ATMega), you need to try look in the folder \drivers\FTDI.

Step 8: Choose the Arduino

Now if you need it uncheck "Show only compatibile hardware" or similar or just choose your Arduino and click "Next".

Step 9: Finally...

Your Arduino should be successfully installed to your system. So Close it, Read your port aaaand... SUCCESS!

Thanks for reading.

<nOne>ERR

Arduino ID: 0xN35T

<p>This problem is, too. The solution?</p>
<p>can you please give a link to the driver</p>
<p>Nedavno som si zaobstaral Arduino Nano a mam presne tento problem, no zastavi sa mi tento proces pri bode 7 kedy mi W8.1 vypisuje ze ten priecinok neobsahuje vhodny driver pre to arduino. Pomozete mi prosim ?</p>
<p>Sk&uacute;s hľadať v Drivers/FTDI</p>
<p>Vid&iacute;m že prepn&uacute;ť jazyk poč&iacute;tača je veľmi n&aacute;ročn&eacute;.</p>
<p>Dik za upozornenie. Najbližšie budem vedieť.</p>
<p>cool stuff</p>

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