An extendable telecommunications patch panel (10) is disclosed. In one aspect, the patch panel can include a plurality of interconnectable connection parts (100) for holding telecommunications connectors (12), such as adapters. Each connection part (100) may be provided with features that allow the connection parts (100) to be interlocked with each other to form the extendable patch panel (10). In one aspect, a first connection feature (122) can be located on a connection part first side (102) and a second connection feature (124) can be located on a connection part second side (104). The first connection feature (122) can be configured to interlock with the second connection feature (124) of an adjacent connection part (100). The connection part (100) may also be provided with an adapter (150) that allows the connection parts (100) to be connected in a staggered formation to result in a staggered patch panel (10).