Training Example: Server Technology – Review the Data, Give Your Score & Compare to the Real AI Evaluation

[IMG: Renowned power meets revolutionary intelligence - Introducing the all-new PRO4X rack pdu]

[H1]
Shaping the Future of Rack Power Distribution

Leaders in rack power distribution units for nearly 40 years, Server Technology PDUs are the choice for Fortune 100 companies to technological startups. Our passion is to push back the boundaries of Rack PDU technology and deliver groundbreaking innovations in hardware and intelligence such as the High Density and Cx (two-in-one) outlets.

[H2] Featured Rack PDUs

[IMG: click to view support options]

[H2] PRO4X

Intelligent Rack PDUEngineered to anticipate tomorrow’s rack power challenges

[IMG: HDOT Cx]

[H2] HDOT CX

High Density + Ultimate Flexibility

See All PDU Families

[H2] Trust our Track Record

We are committed to offering best-in-class products for data centers. Our proven ability to innovate
brings the latest technological advances to PDUs, maximizing performance and flexibility.

[IMG: Product Selector Image]

[H3] Product Selector
Find the right PRO4X, PRO3X, or PRO2 PDU for your data center from our vast PDU portfolio.
Visit the Product Selector

[IMG: BYOPDU screenshot]

[H3] Need a PDU tailored to your data center?
Try the Build Your Own PDU tool to configure your PRO2 PDU.
Build your PDU

[H2] Support Center

Helping you find what you need, including the latest firmware, product selector, technical resources, how to buy, and more.
Explore Now

[IMG: New Firmware Available]

[H2] Find Inspiration in our Blog, Videos, & Case Studies

The Race to Power AI: How Data Centers Are Adapting to Surging Demand
Jun 16, 2026

AI’s Appetite for Power Generates Challenges for Data Centers
Dec 17, 2025

Best Practices for Data Center Rack Resiliency in AI Environments
Jul 31, 2025

View The Blog

[H4] TOTAL HARMONIC DISTORTION MEASUREMENTS

[H4]

[H4] TRIP FORENSICS WITH WAVEFORM CAPTURE

[H4] XERUS TECHNOLOGY PLATFORM

[H4]
“After working with several vendors Servertech has the most reliable solution followed up by a very competitive price.”

Andy Hood, Sr. Ops Manager, EMC

[H4]
“Getting the most functionality for the dollar spent takes effort. Time spent planning and configuring the power
solutions with Server Technology results in better data, better utilization, and better uptime.”

Mathew Adelman, Mgr Global DC Operations Cisco Webex

[H4]
“The Server Technology PDUs that we use allow us to have higher density cabinets versus more cabinets.”

Robert Martinez, IT Prof, Apache Corporation

[H4]
“Good products...innovative features...American made.”

Melvin Lesperance, Engineer, NASA

[H4]
“Provide us with morals that match our own.”
Gary Tinkler, IT Architect, Infiniti UK

Home ▸
Support

[H1]
Server Technology Product Support & Downloads

Important note for customers using DCPDU, PRO3X & PRO4X PDU models with Xerus™ platform:

We have identified a critical issue in the PDU firmware version 4.0.0 and later. Due to features introduced in 4.0.0 and later firmware, the flash write frequency on ServerTech PRO3X and PRO4X PDUs with Xerus controllers may cause flash wear, leading to long-term reliability and performance issues. This does NOT affect the PDU outlet power state. An upgrade to Xerus Firmware v4.3.13 or later is required to reduce flash write cycles and mitigate this potential issue. Please prioritize this firmware upgrade in your operations.

Please
click here for more information, or contact the technical support team. We strongly recommend that all customers with these products upgrade PDUs to this firmware as soon as possible.

CVE-2021-44228 Apache Log4j2 Vulnerability

Server Technology products are not affected by the recently uncovered CVE-2021-44228 Apache Log4j2 vulnerability. CDU, PRO1, PRO2, and PRO3X do not use Java or the Log4j utility described in the CVE.

https://nvd.nist.gov/vuln/detail/CVE-2021-44228

Please
contact our technical support team with any additional questions.

[H3] Get Free Technical Support from Server Technology's Power Strategy Experts

At Server Technology, we pride ourselves in going the extra mile for customers. Whether it's our expert
customer support staff talking you through technical issues or our vast library of product documentation,
our goal is to help you Stay Powered, Be Supported and Get Ahead. Now, with our new Customer Support Portal,
we're providing an even simpler way for you to get answers to your toughest questions. Solutions to the most
common issues are a simple click away. Let's get started.

Create Account & Submit
Support Ticket

Sign In

[H6] Sign Up for Support Notifications

Sign up for firmware updates, end-of-life announcements, or other critical product information.

Sign Up

[IMG: click to view online support options]

[H4] Online Support

With Server Technology's new help desk, you'll get immediate answers to your top technical questions
with the click of your mouse. If you don't find what you need, please request a
customer account or sign
in
to submit your support ticket.

[IMG: firmware update here]

[H4] Firmware Downloads

[H5]

New Firmware Available

Looking for the latest firmware for your Server Technology Rack PDU? Find a complete list of switched
and smart Rack PDU firmware downloads here.

[IMG: Warranty Information]

[H4] Warranties, Returns, and End-of-Life Product Information

At Server Technology, comprehensive product support starts from the day of purchase. All PDUs are
shipped with a standard two-year warranty. Extended warranty support and service plans are also
available for purchase.

[H2] Technical References

[IMG: click to view product manuals]

[H4] Product Manuals

[IMG: click to view support notes]

[H4] Support Notes

[IMG: click to view sentry mib oid and tree downloads]

[H4] SNMP-OID/MIB

Questions?

Call Servertech's highly
experienced support staff at
1-800-835-1515.
For technical support requests, check the
Help Desk, or submit a
support ticket from your dashboard.

[H1] Rack PDU Blog
[IMG: the-race-to-power-ai-how-data-centers-are-adapting-to-surging-demand - https://cdn.buttercms.com/Cikkc0JTqGNwtLdB2cso]
[H4] The Race to Power AI: How Data Centers Are Adapting to Surging Demand
[H6]
Rack Power
June 16, 2026
AI continues to gain momentum, unlocking new possibilities for innovation. But an urgent question looms: where will the uninterrupted power needed to support these workloads come from?
Categories:
Industry Insights
Industry Trends and Solutions
Power Distribution and Monitoring
Server Technology
Tags:
AI
AI Infrastructure
Data Centers
Energy Efficiency
Grid Modernization
High-Density Computing
Power Distribution
Rack PDU
[IMG: ais-appetite-for-power-generates-challenges-for-data-centers - https://cdn.buttercms.com/bBll6Um4Q8mlqH3BVSTC]
[H4] AI’s Appetite for Power Generates Challenges for Data Centers
[H6]
Rack Power
December 17, 2025
As organizations of all shapes and sizes rush to implement AI use cases, data centers are finding it difficult to secure enough power to support high-density AI workloads. Due to AI, U.S. data center power demand is projected to exceed 80 GW in 2030, up from 25 GW in 2024, according to McKinsey research.
Categories:
Industry Trends and Solutions
Power Distribution and Monitoring
Tags:
AI
High Density
PDU
Power Distribution
[IMG: best-practices-for-data-center-rack-resiliency-in-ai-environments - https://cdn.buttercms.com/3D40YfbzSIqLy8MAfhke]
[H4] Best Practices for Data Center Rack Resiliency in AI Environments
[H6]
Rack Power
July 31, 2025
As data centers deploy high-density servers and equipment to support power-hungry artificial intelligence (AI) workloads, they must ensure that racks are resilient, and operators can manage them safely.
Categories:
Helpful Features
Power Distribution and Monitoring
Server Technology
Tags:
AI
Density
PDU
Power
[IMG: understanding-u-space-and-why-its-important - https://cdn.buttercms.com/SRI37lRRTRm8k37D85Rv]
[H4] Understanding U Space, and Why It’s Important
[H6]
Rack Power
June 16, 2025
Data center racks are measured in rack units (RU), commonly abbreviated to U. One U measures 1.75 inches and is used to define the amount of vertical space available in a rack. Knowing what U stands for is critical for data center planning because it standardizes rack and gear height with a uniform measure.
Categories:
Tags:
Density
PDU
Power
[IMG: driving-data-center-efficiency-with-high-density-rack-pdus - https://cdn.buttercms.com/oVIDuaddRWj6O96GTzcs]
[H4] Driving Data Center Efficiency with High-Density Rack PDUs
[H6]
Rack Power
May 28, 2025
Energy efficiency is a top priority for data centers. Power demand is surging, driving a sharp rise in rack densities—and with it, the need for high-density rack PDUs to reliably support advanced computing workloads.
Categories:
Industry Trends and Solutions
Tags:
Density
intelligent PDU
[IMG: unlocking-flexibility-key-benefits-of-universal-input-rack-pdus - https://cdn.buttercms.com/GSZUrqZ3RnGXzPHO87io]
[H4] Unlocking Flexibility: Key Benefits of Universal Input Rack PDUs
[H6]
Rack Power
May 20, 2025
The Server Technology Rack PDU equipped with a Universal Input (UPDU) is a flexible option that supports both single-phase and three-phase Legrand Universal Input cord configurations, making it suitable for a wide range of configurations with a single rack PDU. This one-size-fits-all universal infeed option accommodates both single-phase and three-phase Legrand Universal Input cord options for the same rack PDU.
Categories:
Helpful Features
Power Distribution and Monitoring
Tags:
intelligent PDU
Power Distribution
[IMG: server-technology-pro4x-rack-pdus-ace-third-party-vapt-security-testing - https://cdn.buttercms.com/T5XoGVsFRjmQMROrT3lE]
[H4] Server Technology PRO4X Rack PDUs Ace Third-Party VAPT Security Testing
[H6]
Rack Power
April 17, 2025
Cybercriminals relentlessly target data centers to steal personal data or shut down and disrupt vital networks. According to a recent analysis by PwC, mega breaches are increasing in number and scale: the proportion of businesses that have experienced a data breach exceeding US $1 million has increased significantly year over year, from 27% to 36%. That’s why every inch of a data center’s infrastructure must be rigorously prepared to withstand cyberattacks.
Categories:
Industry Trends and Solutions
Power Distribution and Monitoring
Tags:
intelligent PDU
Security
[IMG: xerus-upgrade-brings-ipv6-compliance-to-server-technology-pro3x-and-pro4x-rack-pdus - https://cdn.buttercms.com/w086lvScTuqrbxsClkN6]
[H4] Xerus Upgrade Brings IPv6 Compliance to Server Technology PRO3X and PRO4X Rack PDUs
[H6]
Rack Power
February 24, 2025
The U.S. government has established September 30, 2025, as the deadline for transitioning 80% of the systems used by federal agencies and contractors from IPv4 to IPv6-only networks. Although this date may seem distant, it is vital to start planning now, especially since complex integrations and upgrades will be required. Fortunately, you won’t need to worry whether Server Technology Rack PDUs will be compatible with IPv6. Server Technology PRO3X and PRO4X Rack PDUs now carry two important certifications: IPv6 Ready Gold Logo and USGv6-r1 certification.
Categories:
Industry Insights
Power Distribution and Monitoring
Tags:
Government
intelligent PDU
[IMG: optimizing-rack-power-quality-with-cutting-edge-pdu-innovations - https://cdn.buttercms.com/Tb3Db6f5QUeL8jkcde8n]
[H4] Optimizing Rack Power Quality with Cutting-Edge PDU Innovations
[H6]
Rack Power
February 06, 2025
Power reliability has become increasingly crucial for data centers amid growing energy concerns. Power, and the lack of it, has been in the press more than ever. While recent press has focused on getting power to new AI data centers, less attention is paid to power quality within the data center, especially at the rack.
Categories:
Industry Insights
Power Distribution and Monitoring
Tags:
Data Center
industry-insights
[IMG: edge-computing-and-smart-sensors-the-perfect-fit - https://cdn.buttercms.com/ZKae82LBSka8EcvwRjp7]
[H4] Edge Computing and Smart Sensors: The Perfect Fit
[H6]
Elie Byrne
July 02, 2024
Edge computing is one of those terms that can be ambiguous. Depending on whom you ask, edge computing might refer to a special form factor server used in a department store's POS system, an edge gateway appliance, or a collection of servers and storage in a Telco closet.
But all these edge computing devices share a common characteristic: they don't live in a data center.
Categories:
Industry Insights
Tags:
Edge Computing
Environmental Monitoring
Monitoring
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[H5] Categories
Power Distribution and Monitoring
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Server Technology
How To
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Helpful Features
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[H1]

[IMG: Renowned power meets revolutionary intelligence - Introducing the all-new PRO4X rack pdu]

[H2]
The Best Just Got Better with the PRO4X PDU

The Server Technology PRO4X Rack Power Distribution Unit (PDU) doesn't just solve today's power needs; it anticipates tomorrow's power challenges. The PRO4X delivers a revolutionary best-in-class intelligent PDU with groundbreaking visibility, reporting, security, and alerting. All while integrating over 30 years of customer-driven technology, experience, quality, and innovation that builds on our renowned hardware technology.

View the Data SheetSelect Your PDU

[H3] Unsurpassed Density and Flexibility

to meet and anticipate ever-changing rack power infrastructure challenges

[H3] Gain Critical, Accurate, and Intuitive Power Quality Insights

with the most comprehensive set of rack power quality monitoring and metrics in the industry

[H3] Engineered for Mission-Critical Uptime and Reliability

with a truly hot-swappable controller and multilayer redundancy for failover support

[H3] Enterprise Level Security

provides unmatched safeguards for your network and physical IT assets

Watch the PRO4X Video

[H2] Introducing the PRO4X Rack PDU

Renowned Power Meets Revolutionary Intelligence

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[H3]
Renowned Power

[H2]
The Intersection of Innovation and Proven Performance

The PRO4X Intelligent PDU is equipped with new controller technology, a flexible power infeed, and industry-proven features to deliver the
most density, flexibility, efficiency, and reliability in one rack PDU platform.

iX Controller
45° Infeed with Universal Input Option
RamLock Mechanical Locking
HDOT Outlets
HDOT Cx Outlets
Alternating Phase Outlets

[H3] The iX™ Controller

is the center of intelligence that houses high compute power, Xerus™ firmware, high visibility display, and multiple connectivity ports. It offers industrial-grade reliability and multilayer redundancy for failover support.

The iX Controller is fully hot-swappable; it enables live replacement with no power interruption to the individual outlets. Besides powering the next generation of rack-based power quality metrics and monitoring capabilities, the
iX Controller also helps consolidate IP addresses while supporting many sensor and accessory functions —such as environmental monitoring, asset location, physical access, and security sensors— to help you manage operations more reliably and efficiently.

[H3] 45-Degree Angled Infeed

is a flexible infeed cord design that improves infeed accessibility and reduces the number of PDU configurations needed.

Wherever you feed your cabinet's branch circuit power, the PRO4X's angled infeed is a one-size-fits-all solution that supports end or front entries to position the PDU where needed, simplifying your deployments while saving time and money.

[H5] Universal Input Option

The optional Universal Input (UPDU) accommodates single-phase and three-phase Legrand® Universal Input Cord options for the same PDU. It allows the PDU to adapt to dynamic power configurations, simplifying deployments and providing a genuine plug-and-play solution. To learn more, visit the
Universal Input landing page.

[H3] RamLock Mechanical Locking

is a high-strength outlet and cord-locking system that mechanically secures C14 and C20 plugs to your PDU without requiring special cables, sleeves, or adapters.

It allows quick power cord installations and unplugging with a one-handed “squeeze and pull" action. Additionally, it prevents unintended downtime due to power cords becoming unintentionally unplugged.

[H3] High Density Outlet Technology (HDOT®)

is a patented design that removes unnecessary outlet moldings and uses module grouping to fit more outlets into the same space.
HDOT outlets are more than 20% smaller than standard PDU outlets, allowing maximum equipment density.

HDOT ensures maximum outlet density. One pair of PRO4X PDUs with HDOT outlets evenly distributed across the PDU can accommodate dense configurations where three or four PDUs would have been necessary.

[H3] HDOT Cx® Outlets

are patented and industry awarded to be a hybrid of IEC C13 and C19 outlets. This industry-first technology allows C14 and C20 power cables to be installed into a single flexible outlet without additional parts or adapters.

HDOT Cx provides ultimate flexibility and density by putting the maximum number of the right outlets in the right place on one single wide PDU. HDOT Cx reduces complexity and costs by reducing the need to purchase new PDUs when future equipment updates occur.

[H3] Alternating Phase Power Distribution

alternates the PDU's different phases on a per-outlet basis down the length of the PDU to evenly distribute the power over the entire rack.

In
three-phase PDU applications
Alternating Phase Power Distribution supports faster installations, shorter cord lengths, better airflow in the back of the cabinet, and much easier load balancing across three phases. These translate to lowering cooling and cabling costs and less chance of tripping a breaker at the PDU or upstream breaker.

Request a Quote

[H2]
Revolutionary Intelligence
Transforming Rack Power Distribution

The PRO4X provides unmatched insights for capacity planning, infrastructure scaling, troubleshooting, environmental and security monitoring, and efficiency improvements at the cabinet.

Advanced Power Quality Monitoring and Metrics integrate ±0.5% energy metering accuracy with existing and groundbreaking rack-based metrics such as Neutral Volage, Total Harmonic Distortion, and Voltage Dips and Swells. When coupled with Waveform Capture, you can confidently reveal trends regarding the health and quality of power sources and power to devices at the rack PDU power inlet, circuit breakers, and outlets.

Total Harmonic Distortion enables real-time harmonics monitoring and alerting at the cabinet level to the scale of your entire data center rack power infrastructure. This game-changing rack capability allows you to identify power conditions that could shorten your IT system's lifespan or lead to inefficiency in the power chain.

Circuit Breaker Trip Forensics with Waveform Capture ensures that when a PDU circuit breaker trips, you have intuitive waveform visualizations with data insights to quickly understand which outlet and corresponding device caused the trip event. When coupled with an outlet power on prevention tool called Trip Cause Outlet Handling, you can isolate defective equipment and restore power faster to non-offending devices.

Xerus Technology Platform combines hardware, software, and communication technologies to form the backbone of the PRO4X rack PDU. It is a flexible and mature platform. It helps maximize data center efficiency and your rack PDU investment by delivering security, white space instrumentation, high compute power, advanced alerting, and complete visibility into your power chain. It also offers unmatched interoperability by supporting popular protocols such as SNMP, MODBUS, and open REST-based APIs including a Redfish® API. Learn More About Xerus >

Test Drive The PRO4X PDU

Advanced Power Quality Monitoring

Total Harmonic Distortion

Circuit Breaker Trip Forensics

Xerus Technology Platform

[H2] Features That Go Beyond

[H4] 45-Degree Angled Infeed

See it in action >

45-Degree Angled Infeed. A flexible infeed cord design that improves infeed accessibility and reduces the number of PDU configurations needed. This one-size-fits-all solution supports end or front entries to position the PDU where needed, simplifying your deployments and saving money and time.

Alternating Phase Outlet Power Distribution >>

×
[H4] Alternating Phase Outlet Power Distribution

See it in action >

Alternating Phase Outlet Power Distribution. Simplifies load balancing for high-density cabinets, improves airflow via shorter cord lengths, and lessens human error by distributing multiple power phases to each outlet.

<< 45-Degree Angled Infeed

Trip Forensics with Waveform Capture >>

×
[H4] Trip Forensics With Waveform Capture

See it in action >

Trip Forensics with Waveform Capture. Allows you to understand exactly which outlet and corresponding device caused a PDU's circuit breaker to trip. When coupled with an outlet power on prevention tool called Trip Cause Outlet Handling, you can isolate defective equipment and restore power faster to non-offending devices.

<< Alternating Phase Outlet Power Distribution

ServerTech PRO4X Universal Input >>

×
[H4] Universal Input

See it in action >

Optional Universal Input (UPDU) is a one-size-fits-all infeed that accommodates single-phase and three-phase Legrand Universal Input Cord options for the same PDU. It allows the PDU to adapt to dynamic power configurations, simplifying deployments and providing a genuine plug-and-play solution.

<< Trip Forensics with Waveform Capture

Cx Outlet >>

×
[H4] Cx Outlet

See it in action >

Cx Outlet. Builds on HDOT, by combining a C13 and C19 outlet into one high-density outlet that accommodates C20 or C14 power cables in a single outlet. It reduces complexity, increases flexibility, and simplifies the PDU selection.

<< ServerTech PRO4X Universal Input

Advanced Metering >>

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[H4] Advanced Metering

See it in action >

Advanced Metering. Includes industry-leading accuracy (±0.5%), trending with Waveform Capture, and Power Quality Monitoring features designed to increase data center rack power efficiency, capacity, and troubleshooting capabilities.

<< Cx Outlet

Peak and Min/Max Power Quality Measurements >>

×
[H4] Peak and Min/Max Power Quality Measurements

See it in action >

Peak and Min/Max Power Quality Measurements. Coupled with Waveform Capture provide a customizable aggregation of the minimum and the maximum of all previously captured measurements. Confidently adjust your operations and optimize or prevent downtime.

<< Advanced Metering

RamLock Mechanical Locking >>

×
[H4] RamLock Mechanical Locking

See it in action >

Ramlock Mechanical Locking. Is a high-strength mechanical outlet locking and cord retention mechanism that secures plugs to the PRO4X. Its plug-in auto-lock and manual release lever allows easy unplugging with a one-handed “squeeze and pull" action.

<< Peak and Min/Max Power Quality Measurements

Total Harmonic Distortion Measurements >>

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[H4] Total Harmonic Distortion Measurements

See it in action >

Total Harmonic Distortion Measurements. Helps you gain an understanding of how “electrically noisy" power at the rack is without having to pay for an independent analysis.

<< Ramlock Mechanical Locking

The Xerus Technology Platform >>

×
[H4] The Xerus Technology Platform

See it in action >

The Xerus Technology Platform. Combination of software and hardware technology, the platform maximizes data center efficiency and resilience. It delivers security, seamless system interoperability, advanced alerting, intelligence, and complete visibility into your power chain.

<< Total Harmonic Distortion Measurements

×

Not all features are listed, and some are unavailable on selected models.

See All Features

[H2] PDU SPECIFICATIONS & FAMILIES

We will help you find the right PRO4X PDU for your specific application, whether you require a standard configuration model or a custom PDU designed for your needs.

Range of Options

100V, 120V, 200V, 208V, 230V, 240V, 400V, and 415V Inputs
Single-Phase and Three-Phase Power
16A to 100A Input
Up to 54 Outlets (mix of HDOT Cx and HDOT C13)
NEMA, IEC, and other Outlet Types are available
Zero U Form Factor
NEMA, IEC, 56 Series, and other Plug/Receptacle Options
Standard Certifications including FCC Part 15 Class A, TUVus and cTUV, IEC 62368, CE, UKCA
Custom Engineering Capabilities available upon request

See PRO4X Tech Specs

Enhanced Security Suite

Encryption: HTTPS, SSH, SNMPv3, Smart TLS
Firewall: IP-based Access Control Lists (IP ACL), Role Based Access Control (RBAC) rules
Passwords: Strong Passwords, Password Expiration
Certificates: Digital Certificate, CA Certificates, Self Signed Certificates, US-CERT Monitoring
Advanced Security: Secure Boot, Repeat Login Block Access, Timing Out Inactive Sessions, Limiting Same Login Use from Multiple Clients, Enforced Restricted Service Agreement Warnings

See PRO4X Tech Specs

Rack PDU Families

Individual Outlet Control

Per Outlet Power Monitoring

Branch Circuit Protection

Input Current Monitoring

Environmental Monitoring

Access, Security & Communications

Expansion Module

Switched POPS® PDUs

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Smart POPS PDUs

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Switched PDUs

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Smart PDUs

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Metered PDUs

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Basic PDUs

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*Please contact a Server Technology power expert for PRO4X PDU family availability.

Select your PRO4X PDU

[H2] Access Our Insights

[H4] Data Sheet

[H4] Firmware

[H4] White Papers

[H4] Product Selector

[H4] FAQ

[H1] Connect With Our Power Experts