Upgrading to Z390 allow Asus to provide 4 USB 3.1 Gen 2 (10 Gb/s) instead of two. [...] We can see a new front panel USB Tyle-C header. [...] Through daily usage, the Prime Z390-A reacts well. [...] The excellent Asus UEFI let us overclock our i9-9900K up to 5.2GHz [...]. We find the excellent Fan Xpert4 that give precise access to fans cooling of the PC.