E-FIB-HX fiber interfaces connect Eclipse HX matrices together to provide a high speed, dual redundant link to transfer audio samples and data between systems. The fiber card enables network connections to 63 other frames and can support up to 1024 audio channels which are allocated by EHX to connected Matrices. These connections can be configured to provide protection against the loss of a link or a node. E-FIB-HX cards should be installed in the last port slot.