Installation guide

McAfee® Network Security Platform 6.0 How dongles work
A group of mechanical relays actually resides between each port pair:
Figure 6: Mechanical Relays
The relays come into play when the Sensor is shut down. Specifically, the relays provide a
path for the signals on pins 1, 2, 3, and 6 to continue to pass when the Sensor is powered
off. In short, the relays ensure that the Sensor will fail open.
It is important to note that the relays provide a path for the signals on pins 1, 2, 3, and 6
only. The signals on pins 4, 5, 7, and 8 are instead filtered out.
When the Sensor runs in inline fail-closed mode, the Sensor uses pins 4 and 5 instead of
pins 1 and 2 to transmit signals:
Figure 7: Tx signals on pins 4 and 5
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