HP 28673A - AdvanceStack 10:10 LAN Bridge MB User Manual page 12

Maximum distances for Gigabit over copper cable are 100 meters (328 feet).
To connect to the network, the NC112T uses the following cable for 1000Base-T transmission:
•
CAT5 UTP or better twisted-pair
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22-26 AWG, 100Ω @ 1 MHz
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EIA/TIA 568a or EIA/TIA 568b
Specifications 12