Keystone jacks are small inserts made from plastic or metal designed for simple customization projects. They are designed to go along with keystone compatible products such as wall plates, surface mount boxes, and patch panels. A keystone ready product is made with square holes where the keystones are inserted. Each keystone simply snaps into place and can be taken out with a simple release tab if they ever need to be removed.

A keystone wall plate with three ports

The main advantage and purpose of keystones is customization. Take wall plates as an example. There are plenty of pre-made wall plates out there that have one RJ45 Ethernet jack and one RJ12 phone jack. But what if a room needs both of those for a computer and phone plus a second RJ12 jack for a fax machine? One extra jack seems like a small thing but finding a pre-made wall plate exactly like that can be a challenge. But by using a keystone wall plate, it is as simple as popping that extra jack into place. Using keystones can turn a drawn-out product hunt into a quick

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