Select your connection type (typically or COM/Serial Port ). Click Finish to complete the installation setup. Step 4: Print a Test Page
Treats the thermal printer like a standard desktop printer. 2. OPOS / OLE for Retail POS Drivers Best For: Dedicated legacy POS software platforms.
Connect the printer to your computer using the interface cable (USB, PoweredUSB, or Serial/RS-232). Ensure receipt paper is loaded correctly. Step 2: Run the Installer
: If the printer is not recognized, go to Windows Control Panel > View devices and printers , click Add a printer , and select The printer that I want isn't listed to manually point to the extracted driver folder. hp a799 thermal printer driver download link
: No legitimate driver download from HP will ever ask for payment, credit card information, or subscription fees. If a site prompts you to "pay for premium drivers," close it immediately.
HP maintains an FTP archive for older business printers:
The exact installation process may vary based on your POS software, but the core steps are generally consistent. Select your connection type (typically or COM/Serial Port )
Open the extracted folder and double-click the file to initiate the installation wizard.
Right-click on and select Printer Properties .
Your current (Windows 10, Windows 11, Linux?) The connection type you are using (USB or Serial?) Installing the HP a799 – Help Center - RICS Software Ensure receipt paper is loaded correctly
Go to Devices and Printers , right-click the HP A799, select Printer Properties , and check the Ports tab. Ensure it is assigned to a USB virtual printer port, not a generic COM port. Garbage Text or Strange Characters Printing
Connect the power cable to the HP A799 printer and plug it into an electrical outlet.
If you update your operating system to a newer version like Windows 11 and find that older legacy drivers fail, always check the HP enterprise catalog for updated operational packages or run the installation file in "Compatibility Mode for Windows 10."