DFI EHL171 Mini-ITX Motherboards with Intel Atom X Series, Dual 2.5GbE and 12 V DC

A control cabinet that drives several screens and a string of serial devices needs a standard board footprint, plenty of onboard I/O and, often, no fan. The DFI EHL171 series is built for that brief: a family of Mini-ITX motherboards, also called Mini-ITX SBCs, measuring 170 x 170 mm, with a 12 V DC input on a DC-in jack by default.

Every EHL171 shares the same layout. Two 260-pin DDR4 SO-DIMM sockets take up to 32 GB in dual channel at up to 3200 MHz, with in-band ECC support on embedded and industrial SKUs. Intel UHD Graphics decodes H.264, H.265 and VP9 in hardware and drives three independent displays from two rear outputs and an internal eDP/LVDS connector. The rear edge carries two 2.5GbE ports, two USB 3.2 Gen 2 and two USB 3.2 Gen 1 ports and a line-out. Internal headers add four USB 2.0 ports, two RS-232/422/485 and four RS-232 ports, 8-bit digital I/O and SMBus. Expansion covers a PCIe x4 slot (x1 signal by default), an M.2 B key with a Nano SIM socket, an M.2 2230 E key and two SATA 3.0 ports, one shared with the M.2 B key.

The builds differ by processor, display outputs and temperature grade. The EHL171-CT-6425E runs the quad-core Intel Atom x6425E at 2.0 GHz with bursts to 3.0 GHz and a 12 W TDP, with DP++ and HDMI 2.0 on the rear, 2.5GbE on Intel I225IT controllers and a -40 to 85 °C rating. The EHL171-CT-6413 runs the quad-core Intel Celeron J6413 at 1.8 GHz with bursts to 3.0 GHz and a 10 W TDP; in DFI’s ordering table the J6413 build pairs VGA and HDMI 2.0 with Intel I225LM controllers and a -5 to 65 °C rating.

Power is a single 12 V DC input (±10%). Every EHL171 is fanless with a 32 mm heatsink in the box, and storage temperature is -40 to 85 °C at 5 to 90% humidity. fTPM is standard with a discrete TPM as an option, and a watchdog timer is programmable from 1 to 255 seconds. The boards boot in UEFI mode only and support Windows 10 IoT Enterprise 64-bit and Linux. They carry CE, FCC and UKCA marks. The series suits fanless control, HMI and display designs that run from a 12 V DC supply, where the -40 to 85 °C build covers enclosures that see frost and heat.