Fun computer fact of the day

Posted by Kromey at 1:01pm Aug 17 '12
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Did you know that 10/100 Ethernet ("Fast Ethernet") only uses 2 twisted pairs? This means that, while technically a violation of the standard, you can actually run two separate links through a single Cat5, Cat5e, or Cat6 cable, as each has 4 twisted pairs!

Doing this could reduce the cost of installing "Fast Ethernet" jacks in your house, as a single cable run can connect two ports each -- only trick to it is wiring the pairs you need to the proper pins on the jacks, something easy enough to look up; I mean, heck Wikipedia can tell you which ones to use!


This trick doesn't work for Gigabit Ethernet, though, as that requires all 4 twisted pairs for a single link.
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