Supermicro X7SPA-HF-D525. Internal memory: 0 GB, Memory voltage: 1.5 V, Supported memory clock speeds: 800 MHz. Processor family: Intel, Compatible processor series: Atom, Built-in processor: D525. PCI Express slots version: 2.0. Storage temperature range (T-T): -40 - 70 °C, Operating temperature range (T-T): 10 - 50 °C, Operating relative humidity range: 8 - 90 %. Width: 171.5 mm, Depth: 171.5 mm