Each MCIO cable carries half a PCIe slot, retimers fix long-run signal loss

TheZachMueller · x · 2026-10-11

Explaining MCIO cables vs switchboards: MCIO extends a PCIe signal out, each cable carrying half a PCIe slot. Passive MCIO vs active retimers is the key split, and longer cable runs degrade signal quality, so retimers help bounce the signal.

Related event: Retimers Rescue Signal Quality in Long MCIO Cable Runs(2 posts)→

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