The Bravo Sure/Fire Hubs come with a wide selection of connector styles including RJ45, terminal block, DB9, DB25 and various coax styles. Connector styles can also be mixed within the building block itself and four building block Hubs will fit horizontally within a 19.0" rack. Most models feature port status lights that demonstrate active port protection. The Bravo Hub comes with 4 possible and convenient grounding locations for attaching a grounding wire or grounding/mounting bracket. Every Hub comes complete with a grounding wire, two grounding/mounting brackets and rubber feet for easy installation.