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Author Topic: cant find Arduino UNO (COmxx) under Ports (COM & LPT)  (Read 749 times)
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ywang4
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« on: September 14, 2012, 10:32:39 am »
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Hi

I have an Arduino Uno, and I tried to install the driver today, but I cant find "Arduino UNO (COmxx)" under Ports (COM & LPT), instead i see "Communications Port (COM1)". Can anyone please help me ToT

Thanks!
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spcomputing
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« Reply #1 on: September 14, 2012, 08:24:32 pm »
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Do you have another available USB port (Back of Desktop, USB Hub etc)?  If not, swap the cable out for another.
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Goofballtech
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« Reply #2 on: September 14, 2012, 09:16:05 pm »
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It may not be in under coma nd lpt right away. Do you see anything saying "unknown device" with a yellow exclamation point that goes away when you unplug your uno?
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Soehave
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« Reply #3 on: December 28, 2012, 02:40:19 pm »
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I am having exact the same problem. I have tried both on my own PC with Windows 7 and on my Mothers computer with XP
 smiley-confuse

I also, can only see (COM1)

It is really frustrating as none of the tutorials I could find comes across this problem.
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danneu8
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« Reply #4 on: March 12, 2013, 11:01:00 pm »
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Quote from: Goofballtech on September 14, 2012, 09:16:05 pm
It may not be in under coma nd lpt right away. Do you see anything saying "unknown device" with a yellow exclamation point that goes away when you unplug your uno?

Same problem.  I have the unknown device when I plug in the Uno.  What does that mean?
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Louis Davis
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« Reply #5 on: March 12, 2013, 11:07:31 pm »
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This is the procedure I use to install the Arduino drivers:

Right click the Unknown Device in Device Manager
Select Update Driver Software
Select Browse my computer for software
Click Browse button
Select the Drivers folder under the location of your Arduino software installation. (Do not select the FTDI folder inside the Drivers folder)
Click OK
Click Next
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