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30 Legrand PDU User Guide
Connecting the Legrand PDU to a Computer
The Legrand PDU can be connected to a computer for configuration via one of the following ports.
Ethernet ports
USB-B port
RS-232 serial port (RJ-45)
The following diagram illustrates a Zero U model's ports.
To use the command line interface (CLI) for configuration, establish an RS-232 or USB connection.
To use a web browser for configuration, make a network connection to the computer. The Legrand PDU is
automatically configured with the following link-local addressing in any network without DHCP available:
https://169.254.x.x
(where x is a number)
https://pdu.local
See
APIPA and Link-Local Addressing
(on page 16).
Establish one of the following connections to a computer. Ethernet port of Legrand PDU must be enabled for
the described connection to work properly, which has been enabled per default.
Direct network connection:
1. Connect one end of a standard network patch cable to the Ethernet port of the Legrand PDU.
The Legrand PDU has dual Ethernet ports. You can connect either Ethernet port to the computer.
2. Connect the other end to a computer's Ethernet port.
3. On the connected computer, launch a web browser to access the Legrand PDU, using either link-local
addressing:
pdu.local
or
169.254.x.x
. See
Login
(on page 79).
USB connection:
1. A USB-to-serial driver is required in Windows
®
. Install this driver before connecting the USB cable. See
Installing the USB-to-Serial Driver (Optional)
(on page 485).
2. Connect a USB cable between a computer's USB-A port and the USB-B port of Legrand PDU.
3. Perform
Initial Network Configuration via CLI
(on page 486).
Note: Not all serial-to-USB converters work properly with the Legrand PDU so Legrand does not
introduce the use of such converters.
Serial connection for "RJ-45" RS-232 connector:
1. Connect the RJ-45 end of the RJ45-to-DB9 adapter cable to the RJ-45 port labeled CONSOLE on the
Legrand PDU.
See
RJ45-to-DB9 Cable Requirements for Computer Connections
(on page 31).
2. Connect the DB9 end to your computer's RS-232 port (COM).
3. Perform
Initial Network Configuration via CLI
(on page 486).