Hello sir, I have one HP DeskJet 3920 USB port printer.
When i goes to MsDos prompt and want to print
any .TXT file, printer can't print.

command like this C:\>COPY TEMP.TXT PRN

How to be assign USB port.

Kindly help me.
Thanks

Follow these steps (on Windows XP, ...):

1. Make your USB printer a shared network resource, even if it is connected to your own PC; choose a share name (not more than 8.3 characters), e.g. "HPDJ3920".

2. Redirect a free DOS printer device of your PC (LPT1...3) to that shared network printer using the console command "net", this way:

C:\> net use LPT1: \\mycomputer\HPDJ3920 /persistent:yes

where "mycomputer" is to be replaced by your computer's name.

3. Print your, in general binary, PRN files like this

C:\> copy mydoc.prn LPT1: /b

where the file "mydoc.prn" has been produced in advance by a normal printing menu command of the application (say MS Word) - but with checkbox "Print to File" checked. By the latter choice, you will be prompted for a file name and you chose, say, mydoc.prn.

1. Share your printer

2. use

> copy file.prn \\<computer_name>\<shared_printer_name>

where <computer_name> is your computer name and <shared_printer_name> is the name you used in step 1 for your printer

Tibi.