If your device is a (most common for M300):
To download the driver for your (commonly known as the Orient BTP-M300 thermal receipt printer), you can use the official installation package provided by vendors like Easify . M Mark M300 Driver Download
: The driver usually downloads automatically when connected to the internet. If it doesn't, you can manually download the USB driver from Roland Pro A/V . If your device is a (most common for
Right-click the problematic device (e.g., “Unknown Device” or “Network Controller”) → → Details tab → In the Property dropdown, select Hardware Ids . select Hardware Ids .