Cat 5

English

Etymology

category +‎ 5

Noun

Cat 5 (uncountable)

1. (computer hardware) A twisted pair cable for carrying signals, particularly for Ethernet-based computer networks.
   • 2000, Bill Buchanan, Computer Busses: Design and Application, Arnold, London, →ISBN, page 60:

     Cat-5 UTP cable – level 5 cables have twisted-pair cores with a characteristic impedance of 100Ω (±15Ω) and a capacitance of 45.9 pF/m. Conductor resistance is around 9Ω/100 m.

   • 2006, Dennis C. Brewer, Paul A. Brewer, Wiring Your Digital Home For Dummies, Wiley Publishing, Inc., →ISBN, page 200:

     When first connecting the service, it may be necessary to connect the Cat 5 or Cat 6 Ethernet cable directly to the computer to sign up with the ISP before inserting the router/firewall and switch between the modem and the computer(s).

   • 2010, Tamara Dean, Network+ Guide to Networks, fifth edition, Course Technology, Cengage Learning, →ISBN, chapter 3 “Transmission Basics and Networking Media”:

     On Cat 5 cable, the jacket is usually stamped with the manufacturer’s name and cable type, including the Cat 5 specification.