HP 40GB high-performance EIO hard drive (part J6073-60042) designed for enhanced input/output storage expansion on HP Color LaserJet enterprise printers, specifically the 4700, 9040, and 9050 series. Features 4200 RPM spindle speed and Ultra ATA-100 interface for reliable document storage, job queuing, and finishing options support. The 2.5-inch form factor integrates into printer hardware configurations where internal storage upgrades or external peripheral expansion is required. Compatible with PostScript and PCL workflows in high-volume color printing environments. This legacy peripheral drive supports document management and hard drive finishing features typical of mid-2000s enterprise color printer systems. Tested and guaranteed; available via quote.