I just bought a USCutter mh-721 MK-II. I exclusively run Ubuntu on all my computers. No Micro$oft for me, thanks. When I plug the cutter in, through USB, it does pick it up, partially. It shows the MFG information, but nothing else. No description, other than the hex ID numbers, (via lsusb).

I was wondering if anyone has any specific directions for this printer, in Ubuntu?

Maybe this post, along with the Inkcut software, will be some help to you.
http://ubuntuforums.org/showthread.php?t=1512795
To learn more about Inkcut, you can read the forum topic about it.
http://www.inkscapeforum.com/viewtopic.php" onclick="readonly();return false;"http://inkcut.sourceforge.net/" class="postlink">http://inkcut.sourceforge.net/
Normally I would direct you to Inkscapecuttingdesigns, but the website appears to unavailable right now.

yes i am a noobee to linux and vinyl cutting but i got it to work....

i am using

ubuntu 13.04 32 bit
inkscape to draw with inkcut 1.0 extension installed
i have US Cutter mh 721-mk2
this cutter worked great with windows with both usb and serial cables.
however with linux it just was NOT working!!!!

WHAT YOU NEED TO DO
1. first thing you need to do is throw away your USB cable that plugs into the machine. (not really)
2. then buy a USB to serial (9 pin) adapter.
3. plug the usb adapter into your computer then use the 9 pin serial cable from the cutter and plug it into the adapter
4. at this point all you need to do is go into printer settings add a printer to the USB to serial port that now displays when before it didnt. install the recommended
generic printer text only drivers.
5. once done load inkscape select your drawing. go into extensions, cutter/plotter then inkcut
properties, set interface to PRINTER then set printer to the generic printer you just set up.
and i works...

i must tell you i was about to throw this cutter out the window... i did this as a last test... boy was i happy when it worked...

please tell me if this works for you i have done a lot of research on this and lots of people are having the same issue...

i use ubuntu 13.04
ubuntu does not have drivers for the usb cable on this plotter (i guess) so just don't use it. works for me using the serial cable. on this computer when setting up the generic printer i had to set the "baud rate" to 9600. with my laptop default worked fine. also with my laptop i had to buy a usb to serial adapter because i only have usb plug ins.

I bought a USB to serial adapter, plugged it in and Ubuntu detects it:

lsusb:
Bus 001 Device 018: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port

dmesg | tail
[565621.562179] pl2303 1-4.3:1.0: pl2303 converter detected
[565621.563701] usb 1-4.3: pl2303 converter now attached to ttyUSB0

But it won't allow me to add a generic printer. When I tell it to search for a new printer, it finds nothing and there are no other options to add a generic printer. What now?

Ok, So scrap the entire idea of setting this up as a printer... Here is what I did....

/dev/ttyUSB0 is owned by root, so as root, you have to go into /dev and run:

chmod o+rw ttyUSB0

After that, when you run ls | grep USB, in the /dev directory, you should see:

crw-rw-rw- 1 root dialout 188, 0 Dec 5 20:12 ttyUSB0

The last set of rw's are what's important. They signify that everyone has the ability to read or write to ttyUSB0.

That will give the average user access to the device. Once its finished, in inkcut, under device properties, set the interface to serial, the port to /dev/ttyUSB0 (that's usb zero) baud rate to match the cutter (mine was 19200). There should be no device selected, just click plot paths and send. Keep in mind that /dev/ttyUSB0 is what my serial adapter shows up as. On your computer, it might be different. You can tell by issuing the command, right after you plug in the adapter...

dmesg | tail

I know mine was assigned to ttyUSB0, because of the lne:

usb 1-4.3: pl2303 converter now attached to ttyUSB0