The 123.hp.com/setup is actually a website which is set up by HP technicians to help people set up their HP Printer by downloading the printer drivers and other software through this website. On this website you can find directions on how you can connect your hp.com/support wirelessly, with help of USB cable and even things like how one can install a cartridge in the printer. www.hp.com/support | hp.com/support | 123.hp.com/laserjet