DISCONTINUED - This product is no longer manufactured



This product has been replaced by a newer version, we recommend the latest version of this product for new projects - see ADDER RED-PSU PRO

Continued support on this product is still available to our existing customers, please contact our Support Team or your local Adder Office for more information.


The ADDER® Redundant Power Supply (RED-PSU) provides your installation with the power to grow on demand. Housed within a 1U 19-inch rack mount module, RED-PSU delivers up to sixteen lockable power 12VDC outputs, hot-swappable power modules and remote management.

  • Resilient: equipped with lockable power units which guard against accidental disconnection
  • Robust yet lightweight: small form factor, rack mountable device 1U
  • Ergonomically optimized: all cables and connections can be individually controlled remotely, removing potential points of failure and facilitating the maintenance of your equipment
  • Easy installation: dispense with the need for mains sockets and power distribution units (PDUs), reducing installation time

RESTful API Instructions: Click Here

Product codes
PSU-RED2-8; PSU-RED2-16; PSU-RED1-8; PSU-RED1-16
Adder Redundant PSU Diagram

Product Features

  • Secure connection: HTTP digest authentication (RFC 2617) ensure web security,  requiring username and password
  • Power integrity: a central microprocessor manages the output of power and ensure power consistency to the multiple devices
  • Adaptable to suit your needs: available in 8 or 16 ports, limited at 20 Watts at 12V
  • Integrated redundancy: removes single points of failure, increasing the reliability of your installation
  • Remotely manage your devices: monitor, troubleshoot and power on and off your devices from your desk


Approvals / Compliance

  • CE
  • FCC
  • UL


Temperature: 0 to 50ºC / 32 to 122ºF

Humidity: 5 – 90% non condensing

Altitude: <2000Meters / 6500ft

MTBF: 500,000hrs at full load @50oC

Connectors – Local Unit

2 x IEC 90-264VAC 47/63Hz input

Efficiency 92%

Power Factor 0.99 typical

Connectors – Remote Unit

1x 8p8c for 10/100 Ethernet connection


Compact case, robust metal construction. Designed for 19 inch rack mounting: 435mm/17.13” (w), 44mm/1.73” (h), 275mm/10.8” (d), 4.5kg/9.9lbz


8 or 16 x locking 3-pin DC connector, 12VDC 20W output. Each output is a Limited Power Service (LPS) to IEC 60950-1


Browser versions

Internet Explorer® 10,11

Firefox 24 ESR and above Chrome 43

Associated products

ADDERLink® XD150

The ADDERLink XD150 high-performance KVM (Keyboard, Video, Mouse) extender enables you to locate your critical hardware in a secure and temperature controlled environment, away from the user work station, whilst maintaining the original user desktop experience. Extension of high resolution video, USB 2.0 and audio signals is complemented with support for a wide range of USB devices.

ADDERLink® XD522

The high performance ADDERLink XD522 KVM (Keyboard, Video, Mouse) extender enables you to locate your critical computing hardware in a secure and temperature controlled environment away from the user work station whilst maintaining the same user desktop experience.

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Product datasheets
Where to buy

Adder products are purchasable through our key technology partners. You can find a partners on our where to buy page.

Where to buy
Ordering information

Redundant power supply units pre-fitted with two removable power supplies

PSU-RED2-8-XX: 8-port power supply system*

PSU-RED2-16-XX: 16-port power supply system*


Power supply units pre-fitted with one removable power supply

PSU-RED1-8-XX: 8-port power supply system*

PSU-RED1-16-XX: 16-port power supply system*


*standard rack mount ears included


XX = Mains Lead Country Code:

UK = United Kingdom
US = United States
EURO = Europe
JP = Japan
CH = China


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