HP Q7559A 512MB DDR-167MHz Non-ECC Unbuffered 200-Pin SoDimm memory module designed for HP LaserJet CM6030 and CM6030f multifunction printers. This DDR SDRAM module operates at 167MHz and uses the standard 200-pin SoDimm form factor, common in printer and embedded systems of that era. Non-ECC unbuffered design keeps latency low for printer controller applications. Typical use cases include expanding print queue capacity and improving performance when processing large or complex print jobs in workgroup environments. Module is refurbished, tested and guaranteed. Available via quote.