PRO4X Frequently Asked Questions

  1. What is the default username and password for the PRO4X?
  2. What are the differences between Server Technology PDU families?
  3. Will the older generation PRO1 and PRO2 rack PDUs continue being supported?
  4. How do I link the PRO4X PDUs?
  5. Can I link the PRO4X with PRO3X or PRO2X models?
  6. Can PRO4X PDUs be cascaded?
  7. Where can I find the MIB?
  8. Where can I find firmware updates?
  9. How do I manually reset my Rack PDU back to factory defaults?
  10. Is the firmware backward compatible with the previous generation PRO1 or PRO2 Server Technology PDUs?
  11. What happens to communication if power is lost to the Primary PRO4X?
  12. Are there alerts when breaker/fuse branch circuit protection trips?
  13. What is the operating temperature rating?
  14. Can I leverage third-party management software to manage the data collected by the PRO4X PDUs?
  15. What does a “true hot-swappable" iX controller mean?
  16. What sensors are compatible with the PRO4X's Sensor port?
  17. How do I connect a Serial Console Server to the PRO4X?
  18. How do I connect a Raritan KX3 KVM Switch to the PRO4X?
  19. How do I connect to a CLI using the PRO4X?
  20. How do I access my serial device from the PRO4X?


  1. Q: What is the default username and password for the PRO4X?
    A: User Name: admin
    Password: legrand
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  3. Q: What are the differences between Server Technology PDU families?
    A: See the family feature comparison chart.
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  5. Q: Will the older generation PRO1 and PRO2 rack PDUs continue being supported?
    A: Yes. We will continue sales of PRO1 and PRO2 products until 2026 with firmware support through 2028. Customers will be given advanced notice before any changes to sales or support.
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  7. Q: How do I link the PRO4X PDUs?
    A: Linking is the logical connectivity of devices, using the PRO4X's PDU Link port within the same rack/cabinet. Where you can link a single Primary PDU with multiple Link PDUs for more efficient power management. Note: Linking connects multiple PDUs, where PDU 1 is defined as the Primary PDU and then you can link up to 7 additional PDUs, called Link PDUs, totaling 8 PDUs. Once PDUs are linked, you can log into Primary PDU and use one single interface to select any PDU that is linked and see the data collected.
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  9. Q: Can I link the PRO4X with PRO3X or PRO2X models?
    A: No. All devices in the chain should be the same models and must be running the same firmware version.
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  11. Q: Can PRO4X PDUs be cascaded?
    A: Yes. Cascading is the physical connectivity of rack PDUs, connecting rack PDUs via the Ethernet port or USB A/B port (e.g., physically chaining PDU 1's USB-A port (the Primary PDU) to PDU 2's USB-B port (the Expansion PDU)) across multiple racks/cabinets. You need to define 1 PDU as the Primary PDU, then you can cascade 31 additional Expansion PDUs from the Primary, totaling 32 PDUs in the cascade/daisy chain. There are 2 different types of cascading modes to choose from after physically connecting the PDUs, they are bridging mode and port forwarding mode. Bridging mode allows for each PDU in the chain to have a separate IP address. Port forwarding mode reduces the number of IP addresses, where every PDU in the chain has the same IP address. That means 1 IP address for up to 32 PDUs, where each PDU in the chain gets assigned its own port number. Cascading is the physical connectivity of devices that reduces the number of network ports used on network switches and reduces the number of IP addresses required.
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  13. Q: Where can I find the MIB?
    A: See the PRO4X Downloads Page
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  15. Q: Where can I find firmware updates?
    A: See the PRO4X Downloads Page
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  17. Q: How do I manually reset my Rack PDU back to factory defaults?
    A: With the known admin password, open the Web UI then go to Maintenance > Unit Reset > Reset to Factory Defaults or CLI command reset factory defaults.
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  19. Q: Is the firmware backward compatible with the previous generation PRO1 or PRO2 Server Technology PDUs?
    A: PRO4X firmware is not compatible with the previous generation due to differences in architecture.
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  21. Q: What happens to communication if power is lost to the Primary PRO4X?
    A: PRO4X controllers have a PDU Link port that also provides power-sharing. Link PDUs downstream from the Primary PDU that is cascaded with the Link port will provide controller power redundancy. If the source power to the Primary PDU is lost, the controller will remain powered on to send configured notifications via power-sharing from connected link units.
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  23. Q: Are there alerts when breaker/fuse branch circuit protection trips?
    A: Yes. The PRO4X controller will display a visual and sonic alarm when the breaker trips and the branch-associated outlets will flash multi-color. These alarms are also logged in the PDU event log and sent via SNMP traps and SMTP notifications when configured in the PDU Event Rule setting.
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  25. Q: What is the operating temperature rating?
    A: The PRO4X has been tested and approved for safe and reliable operation from 0°C to 60°C (32°F to 140°F) environments.
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  27. Q: Can I leverage third-party management software to manage the data collected by the PRO4X PDUs?
    A: Yes. The PRO4X is built on the Xerus Technology Platform, Intelligent PDUs provide an SNMP MIB and open JSON and RedFish® APIs that interoperate with third-party software such as DCIM or BMS.
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  29. Q: What does a “true hot-swappable" iX controller mean?
    A: The iX Controller is hot-swappable:
    • It's interchangeable between like models.
    • It can be purchased independently, does not require any special programming, and can be stocked as spares.
    • It enables "live replacement" with no power interruption to connected equipment.
    • The PDU does not need to shut down or restarted for the controller to be swapped in/out.
    • The outlet states don't change when a card is swapped.
    • The new controller will reprogram itself once seated using data stored "inside" the PDU chassis.
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  31. Q: What sensors are compatible with the PRO4X's Sensor port?
    A: The PRO4X supports daisy-chained DX2-series Legrand SmartSensors, each with the ability to send SNMP-based alerts and email notifications.
    Environmental Monitoring Sensors DX2-T1, DX2-T1H1, DX2-T2H2, DX2-T3H1, DX2-AF1, DX2-T1DP1, DX2-PS
    Water Detection Sensors DX2-WSF-35-KIT, DX2-WSF-70-KIT, DX2-WSF-100-KIT, DX2-WSC-35-KIT, DX2-WSC-70-KIT, DX2-WSC-100-KIT
    Physical Access & Security Sensors DX2-PIR, DX2-VBR, DX2-D2, DX2-D2C6, DX2-PD2, DX2-PD2C5, DX2-CC2
    Sensor Hubs & Accessories DX2-ENVHUB4
    Note: Server Technology environmental sensors and accessories (EMTH-1-x, EMTH-2-xx, EMWS-1-1, EMCU-1-xx) are not compatible with PRO4X.
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  33. Q: How do I connect a Serial Console Server to the PRO4X?
    A: A Serial Console Server, such as the Raritan SX2, can be connected to one of the PRO4X's USB-A ports using a CAT5 cable and a DSER-PWR-USB-G4 USB dongle. For example, set up as Serial Console Server (such as the SX2) <-> CAT5 cable <-> DSER-PWR-USB-G4 <-> PRO4X PDU USB-A.

    NOTE: The PRO4X's USB-A ports can be used for connecting other peripheral devices. Please be aware of this before planning your Serial Console Server connection strategy and configuration.
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  35. Q: How do I connect a Raritan KX3 KVM Switch to the PRO4X?
    A: A Raritan KX3 KVM Switch can be connected to one of the PRO4X's USB-A ports using a CAT5 cable and a DKX3-PWR-USB-G4 USB dongle. For example, set up as KX3 <-> CAT5 cable <-> DKX3-PWR-USB-G4 <-> PRO4X PDU USB-A.

    NOTE: The PRO4X's USB-A ports can be used for connecting other peripheral devices. Please be aware of this before planning your KVM Switch connection strategy and configuration.
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  37. Q: How do I connect to a CLI using the PRO4X?
    A:
    • To connect through a Raritan KX3 KVM Switch and Raritan DSAM Serial Access Module module: This requires a DSER-CLI-USB-G4 dongle and a CAT5 cable. For example, set up as KX3 <-> DSAM <-> CAT5 <-> DSER-CLI-USB-G4 <-> PRO4X PDU USB-A.
    • To connect through a PC using a USB port: This requires a DSER-CLI-USB-G4 dongle, a USB-to-Serial adapter, and a Cisco cable. For example, set up as PC <-> USB-to-serial adapter <-> Cisco cable <-> DSER-CLI-USB-G4 <-> PRO4X PDU USB-A.
    • To connect through a PC with a Serial port: This requires a DSER-CLI-USB-G4 dongle and a Cisco cable. For example, set up as PC serial port <-> Cisco cable <-> DSER-CLI-USB-G4 <-> PRO4X PDU USB-A.
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  39. Q: How do I access my serial device from the PRO4X?
    A: A Raritan DSAM Serial Access Module (DSAM) can be connected directly to the PRO4X PDU's USB-A port, and the serial device would then connect directly to an available RJ45 port on the DSAM module. NOTE: This functionality requires Xerus Firmware 4.0.20 or later.

    NOTE: The PRO4X4's USB-A ports can be used for connecting other peripheral devices. Please be aware of this before planning your DSAM connection strategy and configuration.
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For Technical Support Solution Information:

Please take a look at our Technical References.