As a rough guideline, most organizations install between 24 and 48 ports per patch panel and use a maximum of four to six patch panels per rack. However, this is a general guideline, and the actual number can vary depending on the factors mentioned above. In an enterprise setting, patch panels are typically located in wiring closets which can provide easy, but protected, access to the networking hardware, allowing for quick re-routing of cabling, or cable replacement as necessary. These individual strands will then connect to electronic devices. However, there are a few factors that can influence the number of patch panels one can install per rack, such as: 1. The standard size of a rack is 42U. Wires come into the panel and are "punched down," or terminated, into the IDC block.