HP rp5700 Point of Sale System. Processor front side bus: 800 MHz. Memory type: From 512 MB to 4 GB DDR2 Synch DRAM PC2-5300 non-ECC (667 MHz), Memory slots: 4 DIMM, Maximum internal memory: 4 GB. Optical drive type: SATA SuperMulti DVD writer. Operating system provided: FreeDOS. Power consumption (typical): 240 W