Anandtech published a review on the ASRock DeskMini 310 Mini-PC
A quote from the article:
Small form-factor PCs and gaming systems have emerged as bright spots in the mature PC market over the last decade or so. Intels NUC form-factor introduction was the turning point in the SFF segment, though it came with a few limitations for DIY enthusiasts. While mini-ITX systems are quite flexible and compact, Intel realized that the market could do with an option between the NUC and the mini-ITX systems. The mini-STX (5-inch by 5-inch, known as 5x5) form-factor was launched in 2015. ASRock and ECS have introduced a number of mini-STX form-factor boards and systems. Today, we are taking a look at a low-cost H310 chipset-based mini-STX system from ASRock: the DeskMini 310.ASRock DeskMini 310 Mini-PC Review