First, press CTRL + R (at the same time) or go to search and type “RUN”.=> The way to determine the operating system of the machine is really very simple: You need to determine if the Windows operating system of your machine is using before installing the Brother 2321D printer driver. How to Install Printer Driver Brother 2321D In addition, I suggest you can also take a look at some installation methods to use for the HL-L2321D printer series. Here are the links with my instructions so that you can perform the Brother 2321D Vietnamese Driver download for Windows, Linux and Mac OS operating systems. After downloading the part Driver Brother 2321D English about, you will use it to install on Windows or Macbook, then easily control the Brother HL-L2321D printer to print documents. Driver Brother 2321D is a printer driver, used to install and control the Brother HL-L2321D printer.