The ASRock B550 Phantom Gaming-ITX/ax is a compact Mini-ITX motherboard designed for AMD Ryzen 5000/4000/3000 series processors with Socket AM4. It features the AMD B550 chipset supporting PCIe 4.0 technology, with one reinforced PCIe 4.0 x16 slot for high-performance graphics cards. The board supports Dual Channel DDR4 memory up to 4400MHz+(OC) with a maximum capacity of 64GB across 2 DIMM slots. Storage options include one Ultra M.2 (PCIe Gen4 x4) slot and four SATA3 6.0 Gb/s conNECtors supporting RAID 0/1/10. Networking capabilities feature Intel WiFi 6 802.11ax (2.4Gbps) and 2.5G LAN for high-speed conNECtivity. The motherboard offers comprehensive graphics output with HDMI 2.1 and DisplayPort 1.4 supporting 4K resolution. Additional features include USB 3.2 Gen2 Type-C (10Gbps), 8-channel HD audio with Nahimic audio enhancer, RGB LED headers, and a premium 6-layer PCB design with Dr.MOS power stages for stable power delivery. The compact form factor (6.7" x 6.7") makes it ideal for small form factor gaming builds while maintaining full feature set of ATX counterparts.