Cables To Go's Category 6 Keystone Jacks are designed for superior performance that meets or exceeds industry standard Category 6/Class E according to TIA/EIA 568B 2.1 and ISO 11801 2nd edition. The keystone jack will balance signal transmission of insertion loss and crosstalk from 1 to 250 MHz. Allow color-coded designation port in compliance with TIA-606 requirements. The jacks are designed t ...