Cisco Firepower 8-Port 1G 1000Base-T FTW Network Module Single-Wide

Fail-to-Wire (FTW) is a physical layer (Layer 1) bypass that allows paired interfaces to go into bypass mode so that the hardware forwards packets between these port pairs without software intervention. FTW provides network connectivity when there are software or hardware failures. Hardware bypass is useful on ports where the Firepower security appliance is only monitoring or logging traffic. The hardware bypass network modules have an optical switch that is capable of connecting the two ports when needed.

Firepower 4100 Series Security Appliance