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USB System Architecture
A USB system architecture refers to the physical bus topology of USB devices connected
to a host device. USB devices include USB hubs, USB peripheral devices, or compound
devices (devices with a combination of USB hubs and USB peripheral devices built into it).
The system is organized in a tiered star topology to prevent multiple or circular attachments
to the bus. Each tier represents a degree of separation from the host device. Per USB
specifications, there are seven supported tiers, starting with the host device (or root hub)
occupying the first tier.
NOTE: Do not connect more than five daisy-chained hubs to the root hub. The
Real-time status LED indicators for troubleshooting and monitoring — Provide
visual confirmation of port activity between an active host and each connected
peripheral device.
Extron FOX matrix switcher compatibility — Distributes signals up to 1000 x 1000
and larger.
Available in multimode and singlemode models —
An 850 nm multimode model for moderate-range transmissions up to 2 km
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(1.25 miles).
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A 1310 nm singlemode model for long distances up to 30 km (18.75 miles).
Industry standard LC SFP connectors provide reliable physical connectivity and
precise fiber core alignment.
JITC Certified — Successfully completed interoperability and information assurance
testing for use in government applications and other mission-critical environments.
1 inch (2.5 cm) high, 6 inches (15 cm) deep, quarter rack wide metal enclosures.
External power supply — Highly reliable, energy-efficient universal power supply
provides worldwide power compatibility, with high demonstrated reliability and low
power consumption for reduced operating costs.
architecture does not support peripheral devices connected to USB hubs occupying
the seventh tier.
FOX T/R USB Extender Plus • Introduction
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