The ASRock Z390 Phantom Gaming-ITX/ac is an Intel Z390 (LGA1151) mini-ITX gaming motherboard designed for 8th/9th Gen Intel Core processors. It features a 7-phase digital power design with 50A power chokes for stable overclocking, supporting Dual Channel DDR4 memory with XMP 2.0 profiles up to 4266MHz+(OC) across 2 DIMM slots. The board provides a PCIe 3.0 x16 slot with steel armor reinforcement, plus 1x Ultra M.2 (PCIe Gen3 x4 & SATA3) and 4x SATA3 6Gbps ports for storage expansion. Networking includes Intel Gigabit LAN and 802.11ac WiFi with Bluetooth 4.2. Graphics outputs feature HDMI 2.0 and DisplayPort 1.2 supporting 4K resolution. Additional highlights include USB 3.1 Gen2 Type-C (10Gbps), 8-pin CPU power conNECtor, premium Nichicon audio capacitors, and customizable RGB LED headers with ASRock Polychrome SYNC support. The motherboard also features an integrated I/O shield, BIOS flashback button, and premium alloy chokes for enhanced durability in compact gaming systems.