Kingston KTH-1000/P 1MB Memory Board HP LaserJet IIP IIP+ IIIP PCBA Upgrade

Kingston KTH-1000/P 1MB Memory Board HP LaserJet IIP IIP+ IIIP PCBA Upgrade

The Kingston KTH-1000/P is a 1 MB PCBA memory expansion board designed specifically for HP LaserJet IIP, IIP+, and IIIP laser printers. Adding memory to these printers allows them to handle more complex print jobs, larger page sizes, and additional downloaded fonts — reducing print errors and improving throughput on demanding documents.

Specifications & What's Included

• Manufacturer: Kingston Technology Corporation
• Part Number / MPN: KTH-1000/P
• Memory Capacity: 1 MB
• Memory ICs: MCM511L4256AP80 DRAM chips (multiple ICs visible on board)
• Form Factor: Proprietary PCBA expansion card with blue edge-connector retaining guides
• Compatible Printers: HP LaserJet IIP, HP LaserJet IIP+, HP LaserJet IIIP
• Board condition: clean PCB, no broken traces or missing components observed
• Includes: board only — no packaging

Applications

The HP LaserJet IIP, IIP+, and IIIP are compact desktop laser printers that were introduced in the late 1980s and early 1990s, representing HP's entry-level personal laser printer line of that era. Like most laser printers of the period, they shipped from the factory with a modest base memory — enough for straightforward text printing but often insufficient for graphics-heavy documents, large custom font sets, or complex PCL jobs. Kingston's KTH-1000/P memory board plugs directly into the printer's proprietary memory slot, expanding available RAM and allowing the printer to spool larger jobs without memory overflow errors. These printers remain in service in offices and labs that maintain legacy systems, and replacement memory boards like this are sought by technicians keeping older HP LaserJet fleets operational. This board is also of interest to vintage computer and printer collectors restoring period-correct HP LaserJet setups.