ASRock is launching a new small form factor barebones system later this month that incorporates what the company claims Is the first Mini STX motherboard for AMD’s Zen-based processors (primarily APUs) using the AM4 socket, a tiny case, and optional accessories. The DeskMini A300 and A300W are barebones PCs where you are responsible for adding your own CPU, RAM, and storage. Measuring 155 x 155 x 80mm (approximately 6.1” x 6.1” x 3.15”), the 1.92-liter PCs sit somewhere between an Intel NUC and a Mini ITX build. The DeskMini A300 case is all black with subtle rounded corners, a stylized front panel, and ample square mesh ventilation grills along the top, left side, and back. Up front sits two audio jacks (mic/headphone), one USB 3.1 Type-C, and one USB 3.1 Type-A (both USB 3.1 Gen 1 / 5Gbps) and two USB 2.0 ports can be added via an optional front panel add-on using a header on the motherboard. Around back ASRock’s A300M-STX motherboard offers up one USB 3.1 (5Gbps), one USB 2.0, one Gigabit Ethernet, and three display outputs (one each of HDMI, DVI, and DisplayPort). There is also a DC-in jack for power with the kit using a 19V 120W power brick.
Inside the case the DeskMini A300 uses the ASRock A300M-STM motherboard with measures 5” x 5”. While not the first Mini STX motherboard for AMD processors (Mini STX is generally an Intel form factor), it is reportedly the first for newer AMD chips using the AM4 socket. The board supports up to 65W CPUs and will generally only be used with APUs that have their own integrated graphics as this motherboard lacks a PCI-E x16 slot for installing a dedicated GPU. Granted, an enthusiast might well be able to use a CPU only Ryzen processor and sacrifice a M.2 slot to add in a GPU but then you would need a bigger case and at that point it might be easier to just go Mini ITX (Note that some Mini STX motherboards do support external graphics via MXM slots but those mainly mobile focused GPUs can come at a hefty premium). In any event, the AM4 socket is paired with two DDR4 SO-DIMM slots (up to 2933 MHz), two Ultra M.2 2280 slots for NVMe storage, one M.2 Key E for wireless modules, and two SATA 3 6Gpbs ports (RAID 0 and 1 are supported). ASRock sells an optional 65W CPU cooler, but if you plan to add your own height is limited to 46mm.
Audio is handled by the Realtek ALC233 codec/chipset while networking is handled by the Realtek RTL8111H NIC for wired and the Intel AC-3168 Wi-Fi for wireless (on the A300W SKU).
The DeskMini A300 barebones PC is slated for release later this month starting at $119 which gets you a tiny SFF motherboard, case, and power supply. Tom’s Hardware was able to get a hands-on look at the case and motherboard at CES and took several photos of the kit. It is an interesting product utilizing Mini STX and is nice to see an AMD option in this middle ground form factor.
Looking at the photos, the second M.2 slot as well as the CMOS battery being on the underside of the motherboard may prove to be rather inconvenient (it’s not clear if that case has a motherboard cutout for those areas or not). Using vertical SO-DIMM slots shouldn’t be a problem airflow wise in this case though and should be a bit sturdier than the angled approaches long term. Storage and other I/O seems decent especially considering this system uses the lower-end A300 chipset.
Hopefully reviewers (and modders!) will be able to get their hands on the small form factor hardware soon. What are your thoughts?