MSI X399 SLI Plus DDR4 AMD Motherboard

The MSI X399 SLI Plus is a full-ATX motherboard built around the AMD X399 chipset, designed specifically for 1st and 2nd Generation AMD Ryzen Threadripper processors using the SocketTR4 interface. It is aimed at content creators, power users, and enthusiasts who demand a high-end desktop (HEDT) platform with maximum expandability and multi-GPU capability. On the memory front, the board provides eight DDR4 DIMM slots arranged in a quad-channel architecture, supporting capacities up to 128 GB. Supported speeds range from DDR4-2133 MHz at standard JEDEC profiles up to DDR4-3600 MHz via overclocking, with ECC UDIMM memory also supported for added data integrity in workstation deployments. Storage options are equally generous: three Key-M M.2 slots (each capable of PCIe 3.0 x4 or SATA 6 Gb/s), supplemented by eight SATA 6 Gb/s ports, with RAID 0, RAID 1, and RAID 10 configurations available for SATA devices. The M2_2 slot uniquely accommodates the longer 22110 (110 mm) M.2 form factor in addition to the standard 2242/2260/2280 sizes. Expansion slots comprise two PCIe 3.0 x16 slots, two PCIe 3.0 x8 slots, and two PCIe 2.0 x1 slots, enabling up to 4-Way NVIDIA SLI or 4-Way AMD CrossFire multi-GPU configurations. Additional power delivery to the PCIe x16 slots is provided via an onboard 6-pin ATX 12 V connector. Connectivity is handled by a single Intel I211 Gigabit LAN controller. The USB ecosystem includes, on the rear panel, two USB 3.1 Gen2 (10 Gbps) ports — one Type-A and one Type-C via the ASMedia ASM3142 controller — and eight USB 3.1 Gen1 Type-A ports sourced from the AMD CPU. Internal headers add further USB 3.1 Gen2 Type-C, Gen1, and USB 2.0 expansion. Audio is handled by a Realtek ALC1220 codec delivering 7.1-channel HD audio with S/PDIF optical output. MSI's Audio Boost 4 implementation uses dedicated audio PCB layering and premium components to reduce noise. RGB personalisation is supported via two onboard RGB LED headers and MSI's Mystic Light software, offering 16.8 million colours across 17 effects. Thermal management headers include one CPU fan, one water-pump, and four system fan connectors. Onboard debug tools include EZ Debug LED indicators, a Flash BIOS button, an OC button, and a clear-CMOS header. Verified Specifications: - Form Factor: ATX — 12 in. x 9.6 in. (30.4 cm x 24.3 cm), 9 mounting holes - Processor Support: 1st & 2nd Gen AMD Ryzen Threadripper, SocketTR4 - Chipset: AMD X399 - Memory: 8 x DDR4 DIMM, quad-channel, up to 128 GB; DDR4-2133 to 3600 (OC); ECC UDIMM supported - PCIe Slots: 2x PCIe 3.0 x16 | 2x PCIe 3.0 x8 | 2x PCIe 2.0 x1 - Multi-GPU: 4-Way NVIDIA SLI / 4-Way AMD CrossFire - Storage: 8x SATA 6 Gb/s | 3x M.2 (PCIe 3.0 x4 / SATA) - RAID: 0, 1, 10 (SATA, via X399 chipset) - Audio: Realtek ALC1220, 7.1-channel HD, S/PDIF optical out - LAN: Intel I211 Gigabit (x1) - USB Rear: 2x USB 3.1 Gen2 (Type-A + Type-C) | 8x USB 3.1 Gen1 Type-A | 2x USB 2.0 Type-A - RGB: 2x RGB LED headers, Mystic Light compatible - OS: Windows 10 64-bit - Warranty: 3 Years