United StatesName:
Added to cart 28 times recently
In stock - Ready to Ship
$575.00
$355.0038.3% off
Quantity:
Business price:
3 Year Extended Warranty
Same-day Shipping
14-Day Money Back Guarantee
Shipping:
Payment:
3 Year Extended Warranty
Same-day Shipping
14-Day Money Back Guarantee
Need Additional Discount on Product?
Request a quote below - Get Exclusive Pricing and Support.
Shipping:
Payment:
PWR-C49E-300AC-R=
CATALYST 4948E 300WAC POWER SUPPLY
TRUSTED, TRIED, PROVEN
Inventory Delivered By
& Verified By
Solutions Powered By
PWR-C49E-300AC-R= is a 300W power supply designed in an ATX form factor with a non‑modular design that emphasizes essential reliability and efficiency. It features an 80 PLUS certified efficiency, accepts an input voltage range of 100–240V, and utilizes active PFC to ensure a steady and regulated power output. The unit comes with a robust 120mm fan using a sleeve bearing for effective cooling while maintaining low noise levels under typical loads.
This power supply incorporates critical protection mechanisms including Over Current Protection (OCP), Over Voltage Protection (OVP), and Short Circuit Protection (SCP) to safeguard connected components. It offers the standard 1 ATX 24‑Pin connector and 1 EPS (CPU) 4+4 Pin connector, with additional SATA power connectors and a Molex connector to support various peripheral and storage devices. With an efficiency rating of 87% and flat cable design that contributes to a neat build quality, this unit is well suited for general use in gaming, workstation, and server applications.
PWR-C49E-300AC-R= price is $355.00, a 38.3% saving from the Cisco list price of $575.00. PWR-C49E-300AC-R= is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for PWR-C49E-300AC-R= for additional pricing. Browse the full Catalyst 4900 Power Supplies series or explore all Cisco products.
In a mission-critical data center, IT teams pair dual PWR-C49E-300AC-R power supplies with Cisco Catalyst 4948E switches to achieve N+1 redundancy. This ensures uninterrupted network operation and rapid switchover under load, delivering five-nines availability and minimizing downtime risk for enterprise applications.
A large university campus integrates PWR-C49E-300AC-R power supplies into Catalyst 4948E switches at edge wiring closets to support high-density PoE+ devices. The 300W AC unit delivers stable, efficient power for wireless access points, VoIP phones, and security cameras, optimizing energy usage and simplifying power management across hundreds of endpoints.
A retail chain standardizes branch locations by deploying compact Catalyst 4948E switches with PWR-C49E-300AC-R power modules in wiring rooms. This 300W AC supply delivers consistent power for unified communications and point-of-sale systems while enabling hot-swap maintenance, reducing operational complexity and accelerating on-site serviceability.
To get the detailed certification, please go to the Compliance Center.
 PWR-C49E-300AC-R= |  PWR-C49M-1000AC |  PWR-C49E-300AC-F/2 |  PWR-C49E-300AC-F |  PWR-C49M-1000DC | |
|---|---|---|---|---|---|
| Product Type | Power Supply | Power Supply | Power Supply | Power Supply | Power Supply |
| Wattage | 300W | 1000W | 300W | 300W | 1000W |
| Use Case | General Use | Gaming / Workstation | Gaming / Workstation / General Use | General Use | Gaming / Workstation / Server / Enterprise Server / Data Center |
| Form Factor | ATX | ATX | ATX | ATX | ATX |
| Modularity | Non-Modular | Modular | Non-Modular | Non-Modular | Modular |
| 80 PLUS Certification | 80 PLUS | Gold | Bronze | 80 PLUS | Gold |
| Rail Configuration | Single Rail | Multi Rail | Single Rail | Single Rail | Single Rail |
| Certifications | 80 PLUS / CE / FCC / RoHS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS, CE, FCC, RoHS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / ROHS |
| Remote Monitoring | No | No | No | No | No |
| Input Voltage | 100–240V | 100–240V | 100–240V | 100–240V | 100–240V |
| Hot-Swap Capable | No | No | No | No | No |
| PFC (Power Factor Correction) | Active PFC | Active PFC | Active PFC | Active PFC | Active PFC |
| Fan Size | 120mm | 120mm | 120mm | 120mm | 120mm |
| Fan Bearing Type | Sleeve | Fluid Dynamic | Sleeve | Fluid Dynamic | Fluid Dynamic |
| Zero RPM Mode | No | Yes | Yes | Yes | Yes |
| Efficiency Rating | 87% | 92% | 85% | 85% | 94% |
| Protections | OCP / OVP / SCP | OCP, OVP, SCP, OTP, OPP | OCP, OVP, UVP, SCP, OTP | OCP / OVP / UVP / SCP / OTP | OCP / OVP / UVP / SCP / OTP |
| ATX 24-Pin Connectors | 1 | 1 | 1 | 1 | 1 |
| EPS (CPU) 4+4 Pin | 1 | 2 | 1 | 1 | 1 |
| PCIe (6+2) Connectors | N/A | 4 | N/A | N/A | 4 |
| SATA Power Connectors | 4 | 8 | 4 | 4 | 6 |
| Molex Connectors | 1 | 4 | 2 | 2 | 4 |
| Floppy Connector | No | No | No | No | No |
| Cable Type | Flat | Sleeved | Flat | Flat | Sleeved |
| RGB Lighting | No | No | No | No | No |
| MTBF (Mean Time Between Failures) | 100,000 hours | 150,000 hours | 100,000 hours | 100,000 hours | 150,000 hours |
| Operating Temperature | 40°C | 50°C | 40°C | 50°C | 40°C |
| Product Name | PWR-C49E-300AC-R= | PWR-C49M-1000AC | PWR-C49E-300AC-F/2 | PWR-C49E-300AC-F | PWR-C49M-1000DC |
| Height | 5 inches | 5.5 inches | 5.5 inches | 3.4 inches | 5.5 inches |
| Width | 6 inches | 6.3 inches | 5.9 inches | 5.9 inches | 6.0 inches |
| Depth | 7 inches | 9.8 inches | 3.4 inches | 5.5 inches | 10.0 inches |
| Weight | 3 lbs | 6.6 lbs | 4.4 lbs | 2.9 lbs | 8.0 lbs |
This 300W AC power supply has been stable and dependable in our Catalyst 4948E setup, delivering consistent power without any operational interruptions.
The PWR-C49E-300AC-R fits perfectly and powers our switch reliably. Installation was quick, and performance has remained steady under daily workloads.
We've used this power supply for months with zero issues. It provides clean, consistent power and supports continuous enterprise operations.
A solid replacement power supply for the 4948E. It performs exactly as expected and keeps our network running smoothly.
Reliable and efficient power delivery. This unit has proven dependable in our production environment.