The IDEAL Electrical 89751WH CAT5e Keystone Modular Jack (White, Pack of 10) are high performance modular jack connectors designed to exceed the CAT5e requirements of ANSI/TIA-568-C.2, giving installers the ability to use these products in residential and commercial installations, and for applications such as Gigabit Ethernet. All jacks feature a robust internal printed circuit board design used to help reduce NEXT (near-end cross talk) and improve RF performance at higher frequencies. The IDC tower design and layout help to simplify and speed up the wiring and termination process. Tapered tower tops help to separate each pair into the individual IDC slot without the need to untwist each pair. This allows pairs to easily maintain the recommended maximum of 1/2 in of untwisting per pair from the cable jacket. And twisted pairs stay together. With the PCB design, 89-751WH Jacks are terminated side by side, in a consistent pattern. Users spend less time spent untwisting, separating and routing individual conductors to the IDC contacts.