Depending on your Point of Sale software architecture, you will need to choose one of the following driver packages from the HP portal:
Navigate to the extracted folder and run the setup file .
Troubleshoot if your computer isn't "seeing" the printer.
to notify your POS software when paper is low.
Click next to the latest version of the OPOS or Windows standard driver. Supported Operating Systems
The user guides and hardware reference manuals are located on the same HP Customer Support page as the driver downloads, under the "Manuals" tab.
Follow the on-screen prompts. When asked for the connection type, select the port your printer is physically plugged into (e.g., USB001 or COM1). 4. Configure Print Settings
on a modern Windows system (such as Windows 10 or 11), follow these steps as recommended by technical guides from RICS Software and MicroBiz :
thermal printer driver download link , ensure your computer meets the foundational requirements:
Note: If the above driver does not work, the HP A799 is often compatible with generic ESC/POS drivers, as it uses standard Epson-emulation command sets. 2. Key Features of the HP A799 Thermal Printer
The HP A799 is not a direct thermal printer. Direct thermal printers use heat to create an image on chemically treated paper (receipts, shipping labels). The HP A799 uses thermal inkjet technology—heat is applied to the ink cartridge to eject microscopic droplets onto paper.
Here’s how to get the correct driver—and a direct download link to try.
