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The 100 USB Device Nightmare: Bottlenecks and Engineering Challenges

2025-03-17

Connecting 100 USB devices isn't trivial! The article highlights the severe congestion caused by USB's hub-like architecture, making it impossible for a single controller to handle the load. The solution requires a custom PCB with up to 100 USB controllers and a high-speed network interface (e.g., 100Gb fiber optics), along with complex drivers and server-side software to manage the massive data flow. A cheaper but less efficient alternative is also suggested: using small computers like Raspberry Pis, with efficient power management and Ethernet connections. In short, this is a monstrously complex engineering project.

Bizarre PCIe Issue with 4TB Crucial T500 NVMe SSD

2024-12-28

A user encountered a strange problem with a 4TB Crucial T500 NVMe SSD on an MSI PRO X670-P WIFI motherboard: the SSD works flawlessly after each boot but becomes undetectable after shutdown, requiring a physical reseat. Investigations ruled out the SSD and CPU, pointing to a motherboard design flaw. Residual voltage remains after shutdown, causing the SSD controller to malfunction. Disconnecting the HDMI cable resolved the issue, suggesting a power delivery design or BIOS problem on the motherboard.