Module/Board Type Core Processor Co-Processor Speed Flash Size RAM Size Connector Type Size / Dimension Operating Temperature | MPU Core Rabbit 4000 - 58.98MHz 2MB (Internal), microSD Slot (External) 1.5MB IDC Header 2x25, 2x5, 1xmicroSD Card 1.84 x 2.85 (47mm x 72mm) -20°C ~ 85°C |