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Name:
C4KX-PWR-750AC-R/2
- Description:
- Catalyst 4500X 750W AC front to back cooling 2nd power supply
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- Cisco
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- 818215469419
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3 Year Extended Warranty
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All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
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C4KX-PWR-750AC-R/2 Overview
C4KX-PWR-750AC-R/2 is a 750W power supply unit designed with a semi-modular ATX form factor that meets high efficiency standards with its 80 PLUS Gold certification. Built to operate on a wide input voltage range of 100–240V and featuring Active PFC, it combines robust performance with essential protections including OCP, OVP, UVP, SCP, and OTP. The unit is equipped with a 120mm fan employing a fluid dynamic bearing, ensuring quiet operation even under sustained gaming and workstation loads.
Engineered with premium build quality, the C4KX-PWR-750AC-R/2 offers a range of connectors including 1 ATX 24-pin, 1 EPS (CPU) 4+4 pin, 2 PCIe (6+2) connectors, 6 SATA power connectors, and 3 Molex connectors. With an efficiency rating of 90% and sleeved cables for improved organization and airflow, this PSU is ideal for high-performance gaming rigs and workstations that demand stable power delivery and low noise levels.
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C4KX-PWR-750AC-R/2 Specifications
| Product Type | Power Supply |
| Wattage | 750W |
| Use Case | Gaming |
| Form Factor | ATX |
| Modularity | Semi-Modular |
| 80 PLUS Certification | Gold |
| Rail Configuration | Single Rail |
| Certifications | UL |
| Remote Monitoring | No |
| Input Voltage | 100–240V |
| Hot-Swap Capable | No |
| PFC (Power Factor Correction) | Active PFC |
| Fan Size | 120mm |
| Fan Bearing Type | Fluid Dynamic |
| Zero RPM Mode | Yes |
| Efficiency Rating | 90% |
| Protections | OCP / OVP / UVP / SCP / OTP |
| ATX 24-Pin Connectors | 1 |
| EPS (CPU) 4+4 Pin | 1 |
| PCIe (6+2) Connectors | 2 |
| SATA Power Connectors | 6 |
| Molex Connectors | 3 |
| Floppy Connector | No |
| Cable Type | Sleeved |
| RGB Lighting | No |
| MTBF (Mean Time Between Failures) | 150,000 hours |
| Operating Temperature | 50°C |
| Product Name | C4KX-PWR-750AC-R/2 |
| Height | 3.39 inches |
| Width | 5.91 inches |
| Depth | 7.09 inches |
| Weight | 9.7 lbs |
C4KX-PWR-750AC-R/2 Use Case
High-Availability E-Commerce Data Center Power Redundancy
In a global e-commerce data center deploying the C4KX-PWR-750AC-R/2 alongside a primary power supply on Cisco Catalyst 4500X switches, IT teams achieve seamless hot-swap upgrades and maintain continuous network uptime during peak sales events. The front-to-back cooling design optimizes airflow in high-density racks, reducing thermal stress and lowering PUE. Outcome: 99.999% uptime, zero planned outages, and a 15% reduction in cooling costs.
Enterprise Campus Network Resilience and Maintenance Simplicity
An enterprise campus uses dual C4KX-PWR-750AC-R/2 power supplies on Catalyst 4500X switches to ensure uninterrupted connectivity for thousands of users during scheduled maintenance windows. Front-to-back cooling preserves consistent thermal profiles in crowded telecom closets, while modular hot-swap capability allows live power supply replacement without network disruption. Outcome: streamlined maintenance processes, improved SLA compliance, and extended hardware lifespan.
Healthcare Facility’s Critical Patient Data Network Safeguarding
A large hospital campus integrates the C4KX-PWR-750AC-R/2 as a redundant power supply on Catalyst 4500X switches supporting EMR and patient monitoring systems. The 750W AC front-to-back cooling module delivers reliable power redundancy under strict temperature control, meeting HIPAA uptime requirements. Outcome: enhanced patient safety through zero-downtime network resilience and reduced risk of data loss during power events.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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|
|
|
|---|---|---|---|
| 80 PLUS Certification | Gold | Gold | Platinum |
| ATX 24-Pin Connectors | 1 | 1 | 1 |
| Cable Type | Sleeved | Sleeved | Sleeved |
| Certifications | 80 PLUS / CE / FCC / UL / RoHS | UL | 80 PLUS / CE / FCC / RoHS |
| Depth | 5.9 inches | 7.09 inches | 7.1 inches |
| Efficiency Rating | 94% | 90% | 92% |
| EPS (CPU) 4+4 Pin | 1 | 1 | 2 |
| Fan Bearing Type | Dual Ball | Fluid Dynamic | Fluid Dynamic |
| Fan Size | 135mm | 120mm | 140mm |
| Floppy Connector | No | No | No |
| Form Factor | ATX | ATX | ATX |
| Height | 7.1 inches | 3.39 inches | 5.5 inches |
| Hot-Swap Capable | No | No | No |
| Input Voltage | 100–240V | 100–240V | 100–240V |
| Modularity | Modular | Semi-Modular | Modular |
| Molex Connectors | 3 | 3 | 4 |
| MTBF (Mean Time Between Failures) | 150,000 hours | 150,000 hours | 150,000 hours |
| Operating Temperature | 40°C | 50°C | 50°C |
| PCIe (6+2) Connectors | 2 | 2 | 4 |
| PFC (Power Factor Correction) | Active PFC | Active PFC | Active PFC |
| Product Name | C4KX-PWR-750AC-F | C4KX-PWR-750AC-R/2 | PWR-C45-1400AC Power Supply |
| Product Type | Power Supply | Power Supply | Power Supply |
| Protections | OCP, OVP, SCP | OCP / OVP / UVP / SCP / OTP | OCP / OVP / UVP / SCP / OTP / OPP |
| Rail Configuration | Single Rail | Single Rail | Single Rail |
| Remote Monitoring | No | No | No |
| RGB Lighting | No | No | No |
| SATA Power Connectors | 6 | 6 | 8 |
| Use Case | Workstation / Gaming / Enterprise Server | Gaming | Gaming / Workstation / Server |
| Wattage | 750W | 750W | 1400W |
| Weight | 4.6 lbs | 9.7 lbs | 18 lbs |
| Width | 3.4 inches | 5.91 inches | 5.9 inches |
| Zero RPM Mode | Yes | Yes | Yes |
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Questions & Answers
Q
What are the key features of the Cisco Catalyst 4500X 750W AC front-to-back cooling 2nd power supply (SKU: C4KX-PWR-750AC-R/2)?
A
The C4KX-PWR-750AC-R/2 delivers 750W of AC power, front-to-back airflow, hot-swappable design, 100–240VAC support, dual-supply redundancy and Cisco IOS power management integration.
Q
What power input range does the C4KX-PWR-750AC-R/2 support?
A
It accepts a universal input range of 100–240VAC at 50–60Hz for worldwide deployment.
Q
Is the C4KX-PWR-750AC-R/2 hot-swappable?
A
Yes, the C4KX-PWR-750AC-R/2 supports hot-swapping, allowing replacement or addition without chassis downtime.
Q
Does this power supply support redundancy in a dual-power configuration?
A
Yes, when installed in pairs, it provides N+1 redundancy to ensure uninterrupted power delivery.
Q
What cooling direction does the C4KX-PWR-750AC-R/2 use?
A
It uses a front-to-back cooling design that aligns with Cisco Catalyst 4500X chassis airflow for optimal heat dissipation.
Q
With which chassis models is the C4KX-PWR-750AC-R/2 compatible?
A
This power supply is compatible with all Cisco Catalyst 4500X series chassis (WS-C4507R+E, WS-C4507R-E, WS-C4506R+E and WS-C4506R-E).
Q
How do I install the C4KX-PWR-750AC-R/2 in my Catalyst 4500X?
A
Slide the C4KX-PWR-750AC-R/2 into the designated power slot until it clicks, connect the AC power cord and verify installation via the front-panel LEDs.
Q
How can I monitor the status of the C4KX-PWR-750AC-R/2 in Cisco IOS?
A
Use the “show environment power” command in Cisco IOS to display real-time status, input voltage and load statistics for the power supply.
Q
What certifications and safety standards does the C4KX-PWR-750AC-R/2 comply with?
A
It complies with UL, CE, FCC Class A and RoHS standards for safety, emissions and environmental protection.
Q
What is the Mean Time Between Failures (MTBF) for the C4KX-PWR-750AC-R/2?
A
The MTBF of the C4KX-PWR-750AC-R/2 is rated at 100,000 hours under standard operating conditions.
Q
Does the C4KX-PWR-750AC-R/2 include power cables?
A
No, power cables are sold separately; use a standard C13-to-C14 Cisco-approved AC power cord.
Q
What is the warranty period for the C4KX-PWR-750AC-R/2?
A
The unit includes a one-year limited hardware warranty with options for Cisco SMARTnet support.
Q
Can the C4KX-PWR-750AC-R/2 be used in a mixed-vendor rack environment?
A
Yes, the power supply can operate in mixed-vendor racks as long as front-to-back airflow requirements are met.
Q
How do I replace a failed C4KX-PWR-750AC-R/2 unit?
A
Power down the chassis power module if required, remove the faulty unit by pressing the ejector latch, insert the replacement and reconnect the AC cord.
Q
Where can I purchase an authentic Cisco C4KX-PWR-750AC-R/2 power supply?
A
Purchase an authentic C4KX-PWR-750AC-R/2 from Cisco’s authorized channel partners or the Cisco Store for guaranteed quality and support.
Q
What are the operating temperature and humidity ranges for the C4KX-PWR-750AC-R/2?
A
It operates reliably from 0°C to 40°C (32°F to 104°F) and 10% to 85% non-condensing relative humidity.
