
May 19, 2026
In-depth Analysis of Four Major High-Speed Transmission Interfaces for AI and Data Centers: MCIO, PCIe Riser, Gen-Z and SlimSAS
In AI servers, supercomputers and high-density data center architectures, data interaction between internal modules places unprecedented demands on bandwidth, density, latency and scalability, while traditional interfaces can no longer meet the requirements. This article focuses on four most popular high-speed interconnection solutions including MCIO, PCIe Riser, Gen-Z and SlimSAS. It elaborates on their architectures, performance, merits, demerits and applicable scenarios to facilitate quick selection and design.1. MCIO (Mini Cool Edge IO): New Benchmark for High-Density Modular InterconnectionComplying with SFF-TA-1016 specifications, MCIO is a high-density, high-speed and low-profile inter-module interface designed for next-generation servers, mainly used for high-speed direct connection between motherboards and NVMe SSDs, GPUs, network cards and other I/O modules.Core Advan
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