... 700MHzNOR Flash512KB with bootloader pre-installedDDR SDRAMDDR-2, 128MBRTCCPU Built-in Real Time Clock, Battery backedPeripheralsAudioMicrophone InMonoLine Out / Headphone3.5mm ... 1StorageSD Card1 x microSD card slot, used like one IDE disk on PC, support SDHC up to 32GBUSB-diskUSB ... (optional)On-board Sensor header for user Sensor add-in module, such as IR detection.Debug & MaintenanceDebug Port3-wire ...