HP Deskjet 6122 Color Inkjet Printer - Manual (Page 131)

print technology
Drop-on-demand thermal inkjet printing
software compatibility
USB connection: Mac OS version 8.6, 9.x, or Mac OS X (version 10.1.x)
AppleTalk connection: Mac OS version 8.6, 9.x, or Mac OS X (version 10.1.x)
duty cycle
5000 pages per month
memory
8 MB built-in RAM
processor
96 MHz processor
buttons and lights
Cancel button
Print Cartridge Status light
Resume button and light
Power button and light
i/o interface
Universal Serial Bus (USB) compatible
printer dimensions
454 mm wide x 184.2 mm high x 378.8 mm deep