Alarms and Maintenance Guide Field Replaceable Units E5-APP-B Card FRUs and Part Numbers E5-APP-B Card FRUs and Part Numbers The following E5-APP-B card components can be replaced in the field: E5-APP-B cards (P/N 870-3096-01 and P/N 870-3096-02) Drive modules (P/N 870-3097-01 and P/N 870-3097-02)