HP Deskjet 6122 Color Inkjet Printer - Manual (Page 112)

print technology
Drop-on-demand thermal inkjet printing
software compatibility
MS Windows compatible (95, 98, Me, 2000, NT 4.0 (SP 6 or higher), and XP)
Limited MS Windows 3.1 and DOS support
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
Centronics Parallel, IEEE 1284 Compliant
Universal Serial Bus (USB) 2.0 Full Speed compatible
printer dimensions
454 mm wide x 184.2 mm high x 378.8 mm deep