Guest gODD Posted January 4, 2018 I have been trying to install the MH 871 cutter for weeks now with no progress. It simply appears as USB SERIAL CH340 (COM 7) in device manager. Quote Share this post Link to post Share on other sites
arty-rc 719 Posted January 4, 2018 Did you download the drivers from the US Cutter site? Quote Share this post Link to post Share on other sites
darcshadow 1,625 Posted January 4, 2018 I'd have to double check, but I believe that is all it should show up as in Device manager. The "USB" connection is nothing more than a cheap USB-2-Serial converter. Just point your software to Comm 7 and you should be good to go. Quote Share this post Link to post Share on other sites
slice&dice 2,450 Posted January 4, 2018 From my recollection, you have to be using a com port 1 - 4. Manually assign in Port Properties/Advanced Quote Share this post Link to post Share on other sites
VinylMaster 148 Posted January 6, 2018 That model must be set to Direct COM in the Vinyl Spooler and may also need the emulation changed. Please see this guide for:How to Setup a Chinese Vinyl Cutter Please see this guide for:How to Setup Emulation (Plotter Language) 1 Quote Share this post Link to post Share on other sites
cryofro 1 Posted January 11, 2018 I was having the same problem with my MH 871. It was driving me nuts, but I managed to get it set up via USB without any adapters or messing with any of the ports. The steps that I used to get my cutter to work with Vinyl Master Pro is as follows: Set up cutter and plug in to computer via USB cable. Download the device drivers from US cutter website. Download Vinyl Master Pro and select the correct machine that corresponds with what you own from the drop down menus. Go to the Vinyl Spooler menu (looks like the space shuttle icon) Go to the connections tab and click the detect button. This will open a new window. This next part is very important. This is where I kept messing up. On Step 1, make sure to TURN OFF your machine. (This is very important.) Click next and then you should be on step 2. Turn the machine back on. Click next and it will detect the machine. This should fix the problems without needing to buy any additional cables or adapters and you should not need to change any port settings. I have no idea why they made the setup that way, probably due to some type of limitations with the cutters internal software or something. Hope this helps! Quote Share this post Link to post Share on other sites