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C4KX-PWR-750AC-R/2
Catalyst 4500X 750W AC front to back cooling 2nd power suppl...
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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.
C4KX-PWR-750AC-R/2 price is is available on request. Get immediate quote.
Request bulk order quote for C4KX-PWR-750AC-R/2 for additional pricing. Browse the full Catalyst 4500 Power Supplies series or explore all Cisco products.
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.
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.
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.
To get the detailed certification, please go to the Compliance Center.
 C4KX-PWR-750AC-R/2 |  PWR-C45-1400AC |  C4KX-PWR-750AC-F | |
|---|---|---|---|
| Product Type | Power Supply | Power Supply | Power Supply |
| Wattage | 750W | 1400W | 750W |
| Use Case | Gaming | Gaming / Workstation / Server | Workstation / Gaming / Enterprise Server |
| Form Factor | ATX | ATX | ATX |
| Modularity | Semi-Modular | Modular | Modular |
| 80 PLUS Certification | Gold | Platinum | Gold |
| Rail Configuration | Single Rail | Single Rail | Single Rail |
| Certifications | UL | 80 PLUS / CE / FCC / RoHS | 80 PLUS / CE / FCC / UL / ROHS |
| Remote Monitoring | No | No | No |
| Input Voltage | 100–240V | 100–240V | 100–240V |
| Hot-Swap Capable | No | No | No |
| PFC (Power Factor Correction) | Active PFC | Active PFC | Active PFC |
| Fan Size | 120mm | 140mm | 135mm |
| Fan Bearing Type | Fluid Dynamic | Fluid Dynamic | Dual Ball |
| Zero RPM Mode | Yes | Yes | Yes |
| Efficiency Rating | 90% | 92% | 94% |
| Protections | OCP / OVP / UVP / SCP / OTP | OCP / OVP / UVP / SCP / OTP / OPP | OCP, OVP, SCP |
| ATX 24-Pin Connectors | 1 | 1 | 1 |
| EPS (CPU) 4+4 Pin | 1 | 2 | 1 |
| PCIe (6+2) Connectors | 2 | 4 | 2 |
| SATA Power Connectors | 6 | 8 | 6 |
| Molex Connectors | 3 | 4 | 3 |
| Floppy Connector | No | No | No |
| Cable Type | Sleeved | Sleeved | Sleeved |
| RGB Lighting | No | No | No |
| MTBF (Mean Time Between Failures) | 150,000 hours | 150,000 hours | 150,000 hours |
| Operating Temperature | 50°C | 50°C | 40°C |
| Product Name | C4KX-PWR-750AC-R/2 | PWR-C45-1400AC Power Supply | C4KX-PWR-750AC-F |
| Height | 3.39 inches | 5.5 inches | 7.1 inches |
| Width | 5.91 inches | 5.9 inches | 3.4 inches |
| Depth | 7.09 inches | 7.1 inches | 5.9 inches |
| Weight | 9.7 lbs | 18 lbs | 4.6 lbs |
This second power supply added redundancy to our Catalyst 4500-X. Installation was easy, and performance has been reliable ever since.
The C4KX-PWR-750AC-R/2 works perfectly as a redundant unit. It provides peace of mind for critical network operations.
Solid redundant power option. It integrates cleanly and ensures continuous uptime for our core switching infrastructure.
We added this as a backup supply, and it performs flawlessly. Power delivery and cooling are exactly as expected.
Reliable and efficient second power supply. It supports high availability without adding noise or complexity.
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.
It accepts a universal input range of 100–240VAC at 50–60Hz for worldwide deployment.
Yes, the C4KX-PWR-750AC-R/2 supports hot-swapping, allowing replacement or addition without chassis downtime.
Yes, when installed in pairs, it provides N+1 redundancy to ensure uninterrupted power delivery.