7mm vs. 15mm U.2/U.3 NVMe SSD: Key Differences and Which One Fits Your Needs
U.2 SSDs bridge the gap between traditional 2.5" drive bay compatibility and the blazing speeds of NVMe PCIe interfaces, supporting up to PCIe 5.0 transfer rates of 128Gbps. These SSDs fit into existing 2.5” HDD/SSD slots while delivering superior performance, making them indispensable in enterprise environments that demand high-speed data transfer. Unlike M.2 SSDs, U.2 SSDs are hot-swappable, allowing users to replace or upgrade drives without shutting down the system—perfect for minimizing downtime and streamlining maintenance. Meanwhile, U.3 SSDs build on U.2's legacy with backward compatibility and additional support for future storage protocols, offering unparalleled flexibility for data-intensive applications.
