EASY IDENTIFICATION: Bold numbering identifies ports on the front, which are organized in groups of 24. THOUGHTFUL DESIGN: 24 port, organized in groups of 24, allow use of Cat3, Cat5, Cat6, or Cat6a keystone jacks in a 1U space. EFFICIENT: Properly ground your network and protect from EMI INSTALLATION HARDWARE INCLUDED: No need to buy additional mounting hardware as the necessary tie wraps and mounting screws included in the package. (4 x M6 Cage Nuts;4 x M6 Screws;4 x M6 Washers)