11311 _best_ — Hewlett Packard

Some HP-made components (especially optocouplers, diodes, or ASICs) were re-marked with internal codes. 11311 might appear on a vintage HP or printer mechanism inside a 2600-series thermal printer.

If the HP 11311 refers to a chassis or motherboard variant, it represents the unsung hero of the office environment: the workstation that refused to die. hewlett packard 11311