Here is a link providing some basic how-to information:
Note that you need to get some vital facts on your hardware first.
If he needs to create an udev rule, the informations he found seem to me to be fine: ID 0403:6001
I thought the hardware info was listed in my first post.
Unfortunately the link's info is way beyond my understanding.
I will try to get around to the person's place in a day or so and run lspci
Bus 001 Device 002: ID 0403:6001 Future Technology Devices International, Ltd FT 232 USB. Serial (UART) IC
I happened to have added a rule in a sane udev rule when they existed, because the one for my scanner was not listed.
Here, you have provided the ID : the first 4 numbers are most probably for "Vendor" and the 4 following ones for "Product".
So the link provided by LXDEmystified states:
The Generic Serial Driver can be used with a wide range of converters, by specifying the vendor and product ID codes when you load the USB serial converter module: insmod usb-serial.o vendor=0xVVVV product-0xPPPP, where you need to change the VVVV and PPPP to match your device.
What I get out of this, is that I would invoke as root:
# insmod usb-serial.o vendor=0x0403 product=0x6001 //here I think there is a mistake in the web page, and that the last argument "product" can't be "product-0xPPPP" but "product=0xPPPP" as it is in the preceeding argument
The greater risk is that it won't work.
If you add the device entries as he says on the web page, and do the insmod command line and that it doesn't work, you can switch vendor and product numbers. Usually vendor comes first though. (I hope my explanation is not too confusing)