There seems to be a bit of a rush on small motherboards lately for AMD systems. We saw the mini-STX platform that ASRock announced back at CES, which is a standard height motherboard in a 5-inch by 5-inch form factor. Now we have an Onda motherboard that halves the vertical height, in the first example of AMD in the thin Mini-ITX form factor.

Small form factor systems do not always need to focus on all dimensions being small. Usually we discuss the x/y dimensions being small, but the z-dimension counts as well. This new motherboard from Onda uses the A320 chipset along with two flattened SO-DIMMs and a shortened height rear panel in order to minimize the total z-height of the system.


To push this more, the system uses a 19V DC-In power, which removes the need for a bulky 24-pin ATX power connector. The motherboard supports up to 32GB of DDR4-2666 SO-DIMM memory, has access to an mSATA port and two SATA ports, offers VGA and HDMI video interfaces, uses a Realtek audio codec with half-height audio connectors, and offers an M.2 Wi-Fi interface. Wired networking comes from a Realtek gigabit controller. On the rear there is four USB 3.0 ports, with two headers onboard for four USB ports. 

We are likely to see this motherboard, like the ASRock, end up in dedicated chassis built for it. Onda calls this motherboard the ‘B320-IPC’, with the IPC part usually focusing on embedded systems. Onda sells almost exclusively in Asia.

Additional images from Chupatrick (Reddit), running the system with a 2200G.

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  • AlyxSharkBite - Tuesday, January 22, 2019 - link

    This plus a Ryzen 2400G would make for a nice tiny system.
  • bolkhov - Tuesday, January 22, 2019 - link

    Ian, what thin-ITX case was it in?

    Looks similar to Lian LI PC-Q05, but even smaller and with different layout of controls.
  • Ej24 - Wednesday, January 23, 2019 - link

    I second this question
  • Ej24 - Wednesday, January 23, 2019 - link

    Figured it out. Zapustar "GH1".
  • MrCommunistGen - Tuesday, January 22, 2019 - link

    Hmm... it also looks like it has at least 1 M.2 slot. Between the HS for the B320 chipset and the CPU socket there's a pair of screw holes that say HOLE_NGFF1 and HOLE_NGFF2, and the slot looks WAY bigger than the 2230 or 1216 formfactor you see Wi-Fi modules in...
  • Aikouka - Tuesday, January 22, 2019 - link

    The other two next to it that already have the mount and screw inserted also say HOLE_NGFF3 and HOLE_NGFF4.
  • Valantar - Wednesday, January 23, 2019 - link

    There's clearly one m.2 slot in the corner (blocked by CPU VRMs, so short, for WiFi) and one between the CPU socket and chipset heatsink with far more clearance.
  • stanleyipkiss - Wednesday, January 23, 2019 - link

    No M.2?
  • indigo6alpha - Wednesday, January 23, 2019 - link

    There's a M.2 slot right next to RAM slots
  • stanleyipkiss - Wednesday, January 23, 2019 - link

    My bad. Didn't see it in the article.

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