#Usb 3.0 ports on latitude e6440 install
#Usb 3.0 ports on latitude e6440 update

I am going to buy a Arduino USB device with WCH340 chip and see if it will communicate but I think I am going to have the same problem you have. Is it possible the engraver is bad? I see people all over the internet making these work on all kinds of computers but not me. I know the engraver functions but why on only the one computer. Have you come up with a method to get pat the unknown USB and have it show a COM 340 and be functional. I am able to activate Legacy hardware and it shows up but has a flag on it. You are right to note the Asus computer does not show COM ports and support says that is the way they are built. I have laned to a friend who has tried on 2 other computers and Windows 8.1 and 10. I have tried on an old 2008 Dell XP 32, Del XP 32 laptop, Samsung XP 32 laptop, Asus X502C Win8.1, and a Acer Aspire Window 7. I have been jacking with this for a year and I have only been able to get this to work on one old 2004 XP 32 bit E machine desktop computer which is in pieces. I have an NEJE laser engraver DK-8-KZ with a WCH340G chip and I am having the same problem, I can not get past the USB 'unknown device' statement.

#Usb 3.0 ports on latitude e6440 update

Also trying to update the driver software with the dedicated ch341ser.inf does not help. I could now try to apply the CH341SER.EXE, but this one still gives me the 'pre-installed in advance', so no luck here. When I click on Finish, the device manager shows a COM & LPT port.It ends up with the Code 10 (see screen shot below).Then it installs the software to support this device.At the right I can select the model: Arduino Uno. As a Manufacturer I can sleect Arduino LLC (or Arduino Srl ( So I select the LLC version.

#Usb 3.0 ports on latitude e6440 install

Then I need to select the device driver I want to install for this hardware.It asks me 'From the list below, select the type of hardware you are installing'.

This means there is no com port to detect in my case.īut if you want to know how this continues (also helps answering the questions on 'why don't you have COM&LPT': in the end, it does a something in the COM&LPT, but it simply does not work), here is how it continues in such case: ' The wizard did not find any new hardware on your computer If you know the specific hardware model you want to install, click next to install it from the list.' Seems there was a problem with some DELL boxes a while back and this issue cropped up on one of my roll outs for Home Depot.Īfter 'add legacy hardware > next', I get a popup saying Search for and install the hardware automatically(Recommended) You could try this.not mine but I know it works as I have used it on client computers in the distant past.