Asrock LGA2066 X299 TAICHI CLX - Supports Intel® Core™ X-Series Processor Family for the LGA 2066 Socket | 13 Power Phase Design, Dr. MOS | Supports DDR4 4200+(OC) | 4 PCIe 3.0 x16, 1 PCIe 3.0 x1 | NVIDIA® 3-Way SLI., AMD 3-Way CrossFireX. 7.1 CH HD Audio (Realtek ALC1220 Audio Codec), Supports Purity Sound. 4 & DTS Connect | 10 SATA3, 1 Ultra M.2 (PCIe Gen3 x4 & SATA3), 2 Ultra M.2 (PCIe Gen3 x4) | 1 USB 3.2 Gen2x2 20Gb/s Type-C, 1 USB 3.2 Gen2 10Gb/s Type-C (Front), 6 USB 3.2 Gen1 (2 Front, 4 Rear) | Realtek 2.5 Gigabit LAN, Intel® Gigabit LAN | Intel® Wi-Fi 6 802.11ax (2.4Gbps) + BT 5.0 | ASRock Polychrome SYNC | Hyper BCLK Engine III

Asrock LGA2066 X299 STEEL LEGEND - Supports Intel® Core™ X-Series Processor Family for the LGA 2066 Socket | 11 Power Phase Design, Dr. MOS, Dual Power Connectors | XXL Aluminum Alloy Heatsink & Heatpipe Design | Supports DDR4 4200+(OC) | 4 PCIe 3.0 x16, 1 PCIe 3.0 x1, 1 M.2 Key-E for WiFi | NVIDIA® NVLINK™, 3-Way SLI™, AMD 3-Way CrossFireX™ | 7.1 CH HD Audio (Realtek ALC1220 Audio Codec), Supports Purity Sound™ 4 | 8 SATA3, 2 Ultra M.2 (PCIe Gen3 x4 & SATA3) | 1 USB 3.2 Gen2 x2 Type-C (20Gb/s), 6 USB 3.2 Gen1 (2 Front, 3 Rear, 1 x Front Type-C), 8 USB 2.0 (4 Front, 4 Rear) | Dual Intel® Gigabit LAN | ASRock Polychrome RGB LED