Cat 3

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References in periodicals archive ?
Some government facilities have Category 3 cable in place and cannot upgrade their wiring, since the building walls contain asbestos, which would be exposed during the rewiring process.
The 5V EL40C331 was demonstrated at this spring's Networld+Interop show running error-free over 170 meters of Category 5 cable, and over 80 meters of Category 3 cable.