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Ehm, the specification is clear that all external ports should expose PCIe tunneling? Or is there something that changed?
by izacus 4y ago
Ehm, the specification is clear that all external ports should expose PCIe tunneling? Or is there something that changed?
- vetinari 4y agoI don't know what Microsoft based their claim about it (maybe their own requirements in Windows HCP?) From the spec: 2.1.1.5 USB4 Host Host contains: * A Host Router. * A USB 2.0 Host. * An Enhanced SuperSpeed Host. * A DisplayPort Source. Host can also optionally contain a PCIe controller or PCIe switch. A USB4 Host supports 20G USB4 operation (Gen 2). It optionally supports 40G USB4 operation (Gen 3) and 80G USB4 operation (Gen 4).
- izacus 4y agoHmm, you're right - it's Windows HCP. I found a random statement when they mandate tunneling support to "Maximize compatibility across ecosystem".