DFI ASL553 Intel Atom x7000RE 3.5" Single Board Computers with Triple 2.5GbE, 9 to 36 V DC Input and -40 to 85 °C

Outdoor cabinets, trackside enclosures and unheated plant rooms put a board through temperature swings that commercial parts are not rated for. The DFI ASL553 series is built for them: 3.5″ single board computers on Intel Atom x7000RE processors, specified from -40 to 85 °C on every variant. On a 146 x 102 mm board, they bring triple 2.5GbE, three displays and wide-range DC input into enclosures where space and cooling are both limited.

The Atom x7000RE processors come from Intel’s Amston Lake family, and DFI pairs them with one DDR5 4800 MHz SO-DIMM slot for up to 16 GB. Intel UHD Graphics decodes HEVC, VP9, AV1 and AVC in hardware. A discrete TPM 2.0, a programmable 1 to 255 s watchdog and Realtek ALC888S audio are on every board, and DFI lists Windows 10 IoT Enterprise, Windows 11 and Linux support.

Four processors set the range. The ASL553-TN-x7211RE runs two cores at 6 W for the lowest heat in a sealed box, and the ASL553-TN-x7213RE keeps two cores at 9 W with a higher 2.0 GHz base clock for sustained loads. The ASL553-TN-x7433RE moves to four cores at 9 W for HMI and gateway software together, and the ASL553-TN-x7835RE brings eight cores at 12 W for multi-stream video and heavier edge workloads. All four share the same I/O and temperature rating, so the choice is compute against power budget.

Rear I/O includes three 2.5GbE ports on Intel I226IT controllers, two USB 3.2 Gen 2 and one USB 3.2 Gen 1 Type-A port, HDMI up to 4096 x 2160 and USB-C with DisplayPort Alt Mode up to 3840 x 2160 at 60 Hz. An internal dual-channel 24-bit LVDS connector drives panels up to 1920 x 1200 as a third display. Internal headers add two USB 2.0 ports, one RS-232/422/485 port and 8-bit DIO, and three M.2 sockets take a PCIe or SATA SSD, a 4G or 5G modem with SIM slot and Wi-Fi, alongside one SATA 3.0 port.

Power arrives at 9 to 36 V DC through a 4-pin connector or a barrel connector, and every ASL553 board runs fanless on its passive heatsink. With CE, FCC, UKCA and RoHS compliance, the series suits roadside and rail cabinets, energy sites, outdoor kiosks and vehicle equipment where the enclosure sees the full temperature range.