That tiny but potent Micro-STX system which supports MXM graphic cards up to the Nvidia GTX 1080 or Radeon RX 580, has received a refresh in the form of a new Z370 chipset and some new tweaks, let's take a look !
Nice to see ASRock putting their money where their mouth is and not giving up on STX, also since there's basically no MXM market to speak of if you're looking to buy off-the-shelf.
I'm waiting for them to update the chipset to z390 to see if they improve the power delivery stuff (unlikely) and include a beefier power brick, though I'll probably switch to an hdplex400 once its out as well, hopefully the problem that @confusis had with the burnt chip would be fixed.