8
USB DIRECTOR/4-PORT HUB
1. Specifications
Software Requirements — USB-enabled opera-ting
system such as Windows®95 OSR2.1 or later,
Windows 98, or Windows NT®5.0, Windows 2000,
any Macintosh operating system with USB support
Cable Wiring — 90 Ω±15% unshielded or shielded for
low-speed devices; 90 Ω±15% shielded for full-
speed devices
Maximum Individual Cable Length — Full-speed device:
5 meters (16.4 ft.) shielded cable;
Low-speed device: 3 meters (9.8 ft.)
unshielded/shielded cable
Wiring Topology — Tiered star, point-to-point
connection
Access Method — Differential and bi-directional per
USB spec 1.0; 12 Mbps full speed and 1.5 Mbps
low speed; The hub supports both full
and low speeds. The hub is considered a
full-speed device.
Maximum Hubs in Daisychain — Five (six cables, end-to-
end maximum)
Maximum Devices — 127
Standards Conformance — USB specification 1.0