LEGRAND Server Technology PRO1 User Manual page 32

Multi-Link Dongle
In the Star Linking arrangement, the first link unit connects through the link port.
However, the second and third link units in this arrangement attach to a dongle that connects to the AUX
port on the master unit through a 12-inch (30 cm) cable.
The optional multi-link feature is sold as a separate kit purchased from Server Technology. To use the multi-
link feature, contact your sales representative to order dongle kit, described below.
Multi-Linking Dongle Kit
Note: The dongle can be installed on any PRO1 Sentry Switched DC PDU.
Part number: KIT-PRO2LINK-01D.
The dongle kit contains:
•
One dongle.
•
Two link cables: each 21 ft. (6.4 meters).
•
Two labels marked: LINK 2 and LINK 3.
•
One link cable: 7 in. (178 mm).
•
One mounting screw: M3x6mm.
Multi-Link Dongle
Unit Persistence
Unit Persistence is an internal PRO1 Sentry Switched DC PDU feature that works as follows:
If a link unit is connected to a master unit, and the link unit is disconnected (powered down or accidentally
disconnected), and the master unit is restarted, the link unit will be reported as "Not Found" after the
restart because the link unit is no longer physically connected to the master.
However, the association between the master/link units is retained to allow the continuation of alerts. If the
disconnected link unit is physically re-connected to the master, the "Not Found" status will return to
"Normal" status.
To intentionally remove a link unit from connection with a master unit, the link unit must be purged using
the Purge function.
Unit persistence affects all connected master/link units whether or not they are connected in a multi-
linking configuration.
Dongle Connected to AUX Port
Sentry Switched DC PDU
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