A:Answer From HP Website:
Hana
Form factor: Micro ATX: 24.0 x 24.0 cm (9.45 x 9.45 in)
Chipset: B550
Memory sockets: 4 x DDR4 (288-pin)
Processor socket: AM4
Expansion Slots:
One PCI Express 4.0 x16 lanes
One PCI Express 3.0 x1 lanes
One M.2 socket 1, key A
Two M.2 sockets 3, key M (one for SSD card PCIe x4 Gen 3)