PA-RISC Visualize Workstation Universal Serial Bus

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USB Topology - “Tiered Star”
• Only devices (not other hubs) may be connected to an un-powered hub.
Root Hub
Hub
Hub Hub
Hub
Hub
Hub
Device
Device
Device
Device
Device
Device
Hub
Device
Hub
Device
Device
Device
Device
Device
Device
Device
Device
Device
1
2a
3a
4
5 (max. powered
Max. device depth
hub depth)
2b
3b
3c