Hello . i recently got a uscutter MH 721-mk2 ... I have been following the steps in the manual to get it up and running .....and ..... i am stuck . my laptop doesnt have a serial port . so i follow the libk to install usb drivers . type in the link thats in bold letter in manual and it doesnt work ... Any help would be great . sent a ticket to uscutter support and havent got a reply back