The SIEMON MAX MODULE CAT5 MX-F-C5-01 is a black Cat 5e jack designed for use with Ethernet cables. It features an FC connector for connecting to other Cat 5e cables, making it ideal for networking setups. This module includes 8 units and is compatible with both T568A and T568B wiring standards. The Siemon brand is well-known for producing high-quality networking components, making this jack a reliable choice for your networking needs.