Compatible with HP Business Inkjet 2300, 2300dtn, 2300n, 2800, 2800d,t 2800dtn, 3000, 3000dtn, 3000n; OfficeJet 9100, 9110, 9120, 9130; DesignJet 500/500PS (The HP-GL/2 accessory card is a pre-requisite for to a memory upgrade. The memory upgrade slot is included on the HP-GL/2 card), 800/800PS.