The ARK-1551-S6A1 is a fanless embedded computer powered by an 8th generation Intel Core i5-8365UE processor with four cores at 1.6 GHz, turbo up to 4.1 GHz. It offers two DDR4 SO-DIMM memory slots supporting up to 32 GB of RAM. I/O options include four USB 3.1 Gen 2 ports, two Gigabit Ethernet ports, four RS-232/422/485 ports, 8-bit GPIO, as well as HDMI and VGA ports for dual independent displays. Expansion is facilitated by a full-size mPCIe slot with a SIM card holder and an M.2 2230 E-Key slot for a Wi-Fi module. Storage includes a removable 2.5" SATA III hard drive slot and a full-size mSATA (shared with the mPCIe port). The power supply supports a range from 12V to 24V, and the operating temperature range is from -20°C to 55°C.