6IN CBL CAT5E PATCH BLK SNAGLESS RJ45M RJ45M What is a Category 5e patch cable? Think of it as the street that links the house on your block and all the destinations in town. In actuality, it's a cable used to connect all the hardware destinations in a Local Area Network (LAN). The RJ45 Cat 5e patch is perfect for use with 10/100 Base-T networks.