The term “HP123 HP LaserJet” primarily refers to the range of HP LaserJet printing supplies compatible with HP 123 series cartridges, including toner cartridges and paper designed for LaserJet printers[1].

If you are looking to set up an HP LaserJet printer that uses HP 123 supplies, you can do this via HP’s official printer setup portal at 123.hp.com. This site provides the software and drivers needed for full printer functionality on Windows, macOS, and mobile devices through the HP Smart app[2][4]. The HP Smart app is recommended for the fastest and simplest setup on mobile devices and computers.

Key points:
– HP 123 LaserJet printing supplies relate to ink or toner cartridges and compatible paper for HP LaserJet printers[1].
– Printer setup, driver downloads, and software are accessible via 123.hp.com or through the HP Smart app available on mobile, Windows, and macOS[2][3][4].
– Setup instructions often include scanning a QR code provided with the printer or on the website to streamline installation on mobile devices[2][3].

If you need additional details about a specific HP LaserJet model related to HP 123, or about the cartridges, please provide the exact printer model number, so I can provide more precise guidance.