DFI ASL553-TN-x7211RE Intel Atom x7211RE 3.5″ Single Board Computer with 9 to 36 V DC Input and -40 to 85 °C

Remote telemetry and roadside equipment often sit in a sealed enclosure in direct sun, with a small power budget and no fan. In that setting the lowest-heat processor is usually the right one. The ASL553-TN-x7211RE is the 6 W option in the ASL553 series, a 3.5″ single board computer rated from -40 to 85 °C with three 2.5GbE ports for field and backhaul links.

The Intel Atom x7211RE is a dual-core Amston Lake processor running from 1.0 to 3.2 GHz within a 6 W TDP. Two cores handle protocol conversion, data buffering and a local web interface, and the low TDP leaves thermal margin at the top of the temperature range. One DDR5 4800 MHz SO-DIMM slot takes up to 16 GB, and Intel UHD Graphics supports a maintenance screen. A discrete TPM 2.0 protects credentials on unattended sites, and the programmable watchdog can reset the board after a hang.

Three 2.5GbE ports on Intel I226IT controllers sit on the rear with two USB 3.2 Gen 2 and one USB 3.2 Gen 1 Type-A port, HDMI and USB-C with DisplayPort Alt Mode. A dual-channel LVDS connector supports a local panel. Inside are two USB 2.0 headers, one RS-232/422/485 port and 8-bit DIO for instruments and alarms, one SATA 3.0 port and M.2 sockets for an SSD, a 4G or 5G modem and Wi-Fi.

The board runs fanless on 9 to 36 V DC through a 4-pin or barrel connector, with CE, FCC, UKCA and RoHS compliance. If the site needs more processing at the same temperature rating, the ASL553-TN-x7433RE offers four cores at 9 W and the ASL553-TN-x7835RE eight cores at 12 W.