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2 posts tagged with "PCB Design & Fabrication"

High-speed digital routing, differential impedance matching, and general printed circuit board layout strategies.

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Troubleshooting Guide: NandFarm PowerRiser (Tiny6)

· 6 min read
Radu S
Second of his name. Rattler of bits and bobs.

Welcome to the edge of enterprise desktop hardware hacking. You bought a Lenovo Tiny6, decided it wasn't complicated enough, and crammed a custom expansion board into it. We respect that.

However, because we are forcing consumer and custom hardware to play nice with Lenovo’s locked-down enterprise architecture, things don't always work perfectly on the first boot.

This article is here to help with that. This is a living document. As long as people keep finding creative ways to push the PowerRiser to its limits (and occasionally break things), we will keep updating this page with solutions.

True PCIe Bifurcation on the Lenovo Tiny6 (M90q/P340/P350)

· 5 min read
Radu S
Second of his name. Rattler of bits and bobs.

Recently, user xstefa12 opened an issue on the NandFarm PowerRiser GitHub, on how to bifurcate the x8 PCIe bus from the CPU.

While the PowerRiser design for the M90q/P340/P350 relies on tapping the unused PCH lanes to provide a plug-and-play NVMe slot without requiring any host board modifications, this alternative project goes straight for the throat: it forces the Intel CPU to physically bifurcate its main x8 link.

Here is a breakdown of how it works, the custom hardware involved, and how you can replicate the hardware mod on your own M90q/P340/P350 motherboard.