an network interface device cabinet has removably mounted or fixedly mounted cable spools . the nid cabinet is a small enclosure , typically made of plastic , which sits on the outside wall of an end user &# 39 ; s building , such as a home or office . pre - terminated cables are spooled around each cable spool , and the cable connector at one end of each cable is connected to a network interconnection junction within the nid cabinet . a series of interlocking mounting features are formed on both the cable spool and the mating nid cabinet back wall . two different types of mounting features enable the cable spool to be removably or fixedly mounted within the nid cabinet . when fixedly mounted , the cable spool can still be removed from the nid cabinet , but only if the spooled cabled is completed un - spooled and removed from the cable spool .