Universal Technology Ltd
Category 5E cabling is the most cost effective way to get Gigabit Ethernet to your desktop.
There are no existing protocols that will work on Category 6 but not on Category 5E, but Category 6 does have a bandwidth of 200Mhz against Category 5E at 100Mhz.
So unless you are moving large files over the network, you will notice little difference.
Universal Technology Ltd Overview


