A:AnswerThe motherboard is called CliviaA9 and you can see all the specs here: https://support.hp.com/us-en/document/c05932425. The chipset on this motherboard is combined with the processor into a single integrated circuit called System on a Chip (SoC). This technology combines the processor and chipset functionality into a single physical package.
A:AnswerThe motherboard is called CliviaA9 and the Expansion Slots are One M.2 socket 1, 2230 type for WLAN and One M.2 socket 3, 2280 type for SSD. Form factor: mini ITX: 26.8 x 17.9 cm (10.5 x 7.0 in), Chipset: SoC, Memory sockets: 2 x DDR4, Processor socket: CPU down to PCA.
A:AnswerYes, you can buy your own DDR4 RAM. You will need 2 sticks of 8GB RAM to do so. The cost will vary depending on the brand and speed you choose, but count on approximately $100 or so. https://www.bestbuy.com/site/searchpage.jsp?st=ddr4+8gb+ram&_dyncharset=UTF-8&id=pcat17071&type=page&sc=Global&cp=1&nrp=&sp=&qp=&list=n&af=true&iht=y&usc=All+Categories&ks=960&keys=keys
A:AnswerAre you sure your keyboard and mouse are HDMI and not USB? That would be highly unusual. The computer has one HDMI output for a monitor, but multiple USB ports.
A:AnswerNo, these specs aren't powerful enough to handle that game at high settings with multitasking. You will need at least 8GB RAM and preferably a faster processor.