DFI EHL556-N6210 3.5″ SBC with Intel Celeron N6210, eDP, Triple Display and -40 to 85 °C

A controller in an unheated cabinet has to start cold and still talk to local sensors and switches without extra cards. The EHL556-N6210 is the Celeron N6210 build in the DFI EHL556 series: a 3.5 inch SBC rated -40 to 85 °C, with an eDP panel interface, 8-bit GPIO and I2C on the board.

The Intel Celeron N6210 is a dual-core Elkhart Lake processor running at 1.2 GHz base and up to 2.6 GHz in a 6.5 W envelope, which suits control and HMI software. One DDR4-3200 SO-DIMM socket takes up to 32 GB. Intel HD Graphics drives three independent displays: VGA, a DP++ output at up to 4096 x 2304 at 60 Hz and an eDP connector for a built-in panel.

On the rear are two GbE ports on Intel I225-IT controllers, two USB 3.1 Gen 2 ports at 10 Gbps, the DP++ output and VGA. Internal headers add four USB 2.0, one RS-232/422/485 port, 8-bit GPIO, I2C, line-out and mic-in on a Realtek ALC888 and one SATA 3.0 port. Expansion is an M.2 2230 E key that supports Wi-Fi 5 and Wi-Fi 6 modules, plus a Mini PCIe socket that can be built as an M.2 2280 B key for a SATA SSD; I2C is not available with that option. TPM 2.0 is listed on this part. Where two serial ports and LVDS matter more than GPIO, the EHL556-6413E and EHL556-6425E carry quad-core Atom processors.

Power is a 9 to 36 V DC wide-range input on a DC jack or vertical 4-pin connector, so it runs from 12 V or 24 V supplies. The EHL556-N6210 is rated -40 to 85 °C for operation and storage at 5 to 90% humidity, which suits unheated cabinets and outdoor enclosures. A heatsink and heatspreader thermal module is listed as an optional item. The board measures 146 x 102 mm on the 3.5 inch SBC footprint, and DFI lists Windows 10 IoT LTSC (2019 and 2021) and Linux.