The Kontron KBox A-251-AML/ADN is an ultra-compact fanless embedded box PC at just 137 x 50 x 95 mm and approximately 1 kg, built around a 2.5-inch single board computer platform and designed specifically for IoT edge gateway, machine connectivity, and smart factory applications where space and power are at a premium. Processor options include Intel Processor N97, Intel Core i3-N305, Intel Atom x7211RE, x7433RE, and x7835RE, with Intel Atom variants supporting TCC and TSN for time-sensitive industrial networking. DDR5 memory up to 16 GB and onboard eMMC up to 128 GB provide base compute and storage, with additional M.2 Key-B storage capacity up to 2 TB. Standard interfaces include one DisplayPort, two USB 3.2 Type-A, one USB-C with DisplayPort alternate mode, dual 2.5 GbE Intel I226-V/IT ports, and one RS-232 COM port. The I/O door expansion system enables field configuration with optional modules for EtherCAT, dual CAN, dual 2.5 GbE, additional non-isolated RS-232/422/485 COM ports, or 8-channel GPIO/DIO, via the M.2 Key-B slot. Wi-Fi 6 and LTE/5G cellular connectivity are optionally available via M.2 Key-E and Key-B slots respectively. DIN rail, rugged DIN rail, and desktop mounting options, 12 or 24 VDC power input with automotive battery backup option, CE, UL 61010-1, FCC, and UKCA certification, and compatibility with KontronOS, KontronGrid fleet management, and FabEagle Connect integration software complete a thoroughly capable compact gateway platform. Available from Recab, your Nordic partner for Kontron embedded computing solutions.