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Skylake-based Nano-ITX SBC offers 4x GbE and stackable PCIe

Feb 5, 2018 — by Eric Brown 6,387 views

[Updated: Feb. 8] — ADL’s rugged “ADL120S” SBC runs Linux or Windows on 6th Gen Core CPUs, and offers dual 4K DP ports, 4x GbE ports, 4x USB 3.0 ports, and expansion via 2x M.2 slots and stackable PCIe expansion.

ADL Embedded Solutions has launched a rugged, Nano-ITX form factor ADL120S single board computer that’s designed for IIoT, networking, and cyber-security applications. The standout feature is the SBC’s stackable PCIe expansion. In addition, you get dual M/2 Key-B 2280 interfaces that support PCIe/SATA with USB 3.0.

(click image to enlarge)

Like last year’s 3.5-inch ADLQ170HDS SBC, the ADL120S runs Linux or Windows on dual- or quad-core Intel 6th Gen (“Skylake“) Core and Celeron CPUs that support an LGA1151 socket. In this case, however, there’s an Intel Q170 chipset instead of a Q170HDS. The listed SKUs included the quad-core, 2.4GHz Core i7-6700TE and the dual-core, 2.7GHz i3-6100TE and 2.3GHz Celeron G3900TE.

The board has a compact, 120 x 120mm Nano-ITX footprint, but has a high vertical profile with 4x USB 3.0 ports stacked on a single column. This high-rise coastline also includes 4x GbE ports, one of which has WoL and PXE Boot, and a pair of DisplayPort 1.2 ports with 4096 x 2304 @ 60Hz resolution.


The ADL120S ships with up to 32GB DDR4 RAM, and offers a wide-range 20-30VDC input and RTC with battery. Both -20 to 70°C or -40 to 85°C versions are available. The SBC is touted for its “high MTBF, long-life availability, hardware and firmware revision control, obsolescence management, and technical, engineering and design support.”

Stackable PCIe expansion

The ADL120S SBC includes a proprietary, stackable PCIe expansion interface that supports off-the-shelf or custom designed add-on boards. “In order to maintain the smallest footprint possible, the 9x PCIe X1 lanes (0-8) are muxed with up to 4x USB 3.0 in lanes 0-3, and up to 4x SATA in lanes 5-8,” wrote JC Ramirez, ADL Director of Engineering, in an email to LinuxGizmos. “In addition to SMBus, DisplayPort, Power control, LEDS, etc., Plug and Play of the breakout boards is enabled by an onboard PIC chip which communicates the configuration data back to the BIOS,” continued Ramirez.

“While technically feasible to go higher than one board, the real aim is to create custom mezzanine solutions that satisfy all requirements with only one mezzanine board to maintain the smallest overall size possible in an ADLEPC-1520 enclosure,” Ramirez added. In support of this unique feature, ADL offers optional custom stackable PCIe expansion board development services.

Preliminary specs

ADL currently lists the following “preliminary” specifications for the ADL120S:

  • Processor — Intel 6th Gen dual- or quad-core Core or Celeron CPUs (see farther above); LGA1151 socket; Intel HD Graphics Gen 9; LGA1151 socket; Intel Q170 chipset
  • Memory — Up to 32GB DDR4 via 2x SODIMM sockets
  • Display – 2x DisplayPort 1.2 (at up to 4096 x 2304 @ 60Hz)
  • Networking — 4x Gigabit Ethernet ports (1x with PXE boot and WoL)
  • Other I/O — 4x USB 3.0 ports
  • Expansion:
    • Stackable PCIe expansion — 9x PCIe x1 lanes, multiplexed with up to 4x SATA and/or up to 4x USB 3.0, plus DisplayPort, PSON, PGOOD, PWRBTN, and power
    • 2x M/2 Key-B 2280 with PCIe/SATA with USB 3.0
  • Other features — Watchdog; HW monitoring
  • Power:
    • 20-30VDC input (optional 12-24V or 20-36V)
    • Galvanically isolated, over/under voltage protection; reverse voltage protection
    • RTC battery
  • Dimensions — 120 x 120mm (Nano-ITX)
  • Operating temperature — -20 to 70°C or -40 to 85°C
  • Operating system – Linux and Windows drivers

Further information

No pricing or availability information was provided for the ADL120S. More information may be found on ADL’s ADL120S product page.

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