Replace Power
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Replace Power 300W 300 Watt ATX Power Supply Replacement for HP Bestec ATX-250-12E, ATX-300-12E, ATX-300-12E-D
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Replace Power 300W 300 Watt ATX Power Supply Replacement for HP Bestec ATX-250-12E, ATX-300-12E, ATX-300-12E-D
Universal compatibility and reduced depth make this 300W power supply the perfect replacement for your original.
Replace Power 300W 300 Watt ATX Power Supply Replacement for HP Bestec ATX-250-12E, ATX-300-12E, ATX-300-12E-D
Item #: 16238778

Replace Power 300W 300 Watt ATX Power Supply Replacement for HP Bestec ATX-250-12E, ATX-300-12E, ATX-300-12E-D

88% of respondents would recommend this to a friend

Item #: 16238778

SLE 2616

Price Details

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*All items will import from US

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Order now and get it around Monday, September 14
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Universal compatibility and reduced depth make this 300W power supply the perfect replacement for your original.
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What Stands Out

High Efficiency
Delivers 300 Watts of reliable power with a high efficiency rating, minimizing energy costs and ensuring stable performance for your HP systems.
Versatile Compatibility
Designed to seamlessly replace HP Bestec models, this power supply guarantees compatibility across various HP systems, simplifying upgrades or replacements.
Enhanced Durability
Constructed with premium materials, the power supply ensures lasting durability and optimal performance, providing peace of mind for users with demanding computing needs.

Product Details

Upgrade your HP computer with Replace Power 400W ATX Power Supply. Compatible with ATX-250-12E, ATX-300-12E, ATX-300-12E-D models. Order now! Shop at Ubuy Sierra Leone
Compatible DevicesPersonal Computer
Connector Type Used on CableFloppy, SATA
Output Wattage300 watts
Form FactorATX
Wattage400 watts
Cooling MethodAir
Number of Fans1
Maximum Input Voltage230 volts
Minimum Input Voltage110 volts
BrandReplace Power
ManufacturerReplace Power
Mfr Part NumberRPSU-ATX-300-12E-D
Item Dimensions5.5 x 5.9 x 3.4 inches (14 x 15 x 8.6 cm)
Item Weight1.5 pounds (680 grams)
Connector TypeFloppy, SATA
Item dimensions L x W x H5.5 x 5.9 x 3.4 inches (14 x 15 x 8.6 cm)
Fan Count1

Who Should Buy?

Suitable For
  • HP Desktop Users

    Ideal for HP desktop users needing a reliable power supply replacement for specific Bestec models.

  • Budget-Conscious Buyers

    A cost-effective solution for users wanting to replace their power supply without breaking the bank.

  • DIY PC Builders

    Suitable for users who build or upgrade their own PCs and require a dependable power supply.

Not Suitable For
  • High Performance Gamers

    Not suitable for users with high-end gaming systems requiring more wattage and better performance.

Product Description

Replace Power 300W 300 Watt ATX Power Supply Replacement for HP Bestec ATX-250-12E, ATX-300-12E, ATX-300-12E-D

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What are the specifications of the Replace Power® 400W ATX Power Supply?

    Answer: The Replace Power® 400W 400 Watt ATX Power Supply features a standard 20+4 pin connector, a robust output of 400 watts, and compatibility with various HP models like Bestec ATX-250-12E, ATX-300-12E, and ATX-300-12E-D. This power supply is designed to support high-performance components, ensuring stability and efficiency during demanding tasks. Users looking to replace an older or failing unit will appreciate its reliable performance in home or gaming PCs, where power stability is crucial for optimal functionality.
  • Question: Is the Replace Power® 400W ATX Power Supply compatible with gaming PCs?

    Answer: Yes, the Replace Power® 400W ATX Power Supply is suitable for gaming PCs that utilize compatible HP models. While primarily designed for HP systems, many users successfully integrate it into custom builds that demand consistent power delivery. If you have mid-range to high-end components, this power supply can efficiently handle the load, especially during intense gaming sessions, thanks to its robust output and inherent efficiency.
  • Question: How to install the Replace Power® 400W ATX Power Supply?

    Answer: Installing the Replace Power® 400W ATX Power Supply involves safely disconnecting your existing power supply, then connecting the new unit’s cables to your motherboard and peripherals. Ensure your computer is powered off and unplugged before beginning the installation. This power supply comes with detailed instructions, making the process straightforward for both novice and experienced users looking to upgrade or replace their power supply unit.
  • Question: What kind of components will the Replace Power® 400W support?

    Answer: The Replace Power® 400W ATX Power Supply can support a variety of components, including multiple hard drives, optical drives, and a decent graphics card. It is ideal for general-purpose computing, multimedia tasks, and moderate gaming. If you are planning to run a dual-drive setup or pair the power supply with a mid-range graphics card, you can be assured that it will handle the load efficiently while maintaining stable performance.
  • Question: Where can I buy the Replace Power® 400W ATX Power Supply in Sierra Leone?

    Answer: You can buy the Replace Power® 400W ATX Power Supply on Ubuy, which offers a variety of models and configurations. Ubuy provides a seamless shopping experience, along with customer support to assist you with any inquiries regarding your purchase. It's important to choose a reputable platform like Ubuy to ensure you receive genuine products and reliable service.
  • Question: What safety features does the Replace Power® 400W Power Supply have?

    Answer: The Replace Power® 400W Power Supply includes essential safety features such as over-voltage, over-current, and short-circuit protection. These features are critical in preventing component failure and protecting your system from potential damage in case of electrical issues. Users can enjoy peace of mind knowing their equipment is safeguarded while maintained at optimal performance levels, making this power supply a reliable choice for daily use.
  • Question: Does the Replace Power® 400W Power Supply come with a cooling system?

    Answer: Yes, the Replace Power® 400W Power Supply is equipped with an integrated cooling fan that operates to dissipate heat efficiently during usage. This fan plays a significant role in maintaining temperatures within safe limits, especially under heavy load scenarios such as gaming or intensive computing tasks. A cool power supply ensures longevity and reliable performance, allowing users to take on demanding tasks without overheating concerns.
  • Question: Can the Replace Power® 400W ATX Power Supply be used in non-HP systems?

    Answer: The Replace Power® 400W ATX Power Supply can indeed function in non-HP systems, provided they meet the ATX power supply specifications and have compatible connectors. Many computer enthusiasts use this power supply in custom builds that support standard ATX configurations. It’s crucial to ensure that your system's power requirements align with the output capabilities of this power supply for optimal performance.
  • Question: What should I consider when replacing my ATX Power Supply?

    Answer: When replacing your ATX Power Supply, it’s essential to consider the wattage needs of your system, the connector compatibility, and any specific features such as efficiency ratings and safety mechanisms. Additionally, researching brands and reading reviews can provide insights into reliability and performance. The Replace Power® 400W Power Supply is a good choice for users with mid-range setups, ensuring a balanced performance for various computing needs.

Replace Power Internal Power Supplies Editorial Review

The Replace Power® 400W ATX Power Supply has garnered a mixed yet largely positive reception among customers. Many users have found it to be an effective and reliable solution for reviving their non-functioning computers without needing to invest in a new machine. The power supply is noted for its wide compatibility with various components, including connectors for both SATA and Molex, which adds versatility for different motherboard setups. Some customers have highlighted that it gets the job done efficiently, and many were pleased to see their systems powered back on with all their files intact after installation. However, the product is not without its drawbacks. A recurrent theme in the feedback is the loudness of the fan. While some customers were willing to overlook this annoyance, others found it intolerable. Additionally, there were reports of specific quality control issues, such as a malfunctioning voltage switch upon unboxing and premature fan failure within the first day of use, which led to dissatisfaction and complaints about restocking fees for returns. Overall, while the Replace Power® 400W is a practical choice for those needing to replace a faulty power supply, potential buyers should be aware of the noise level and the possibility of quality inConsistencies. **

Customer Reviews & Ratings

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Pros

  • Effective at reviving non-functional computers
  • Compatible with various components (multiple SATA and Molex connections)
  • Generally easy to install in standard ATX cases
  • Many users report the power supply working reliably post-installation

Cons

  • Reports of a loud fan, which may be intolerable for some users

Platform Trust & Buyer Confidence

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Mohammad
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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”

23 July 2026 · via Trustpilot
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”

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“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”

23-Jul-26 · via Trustpilot
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Onesi
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”

22 July 2026 · via Trustpilot
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SAO JOHN
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“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”

23 July 2026 · via Trustpilot
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SLE 2616

Order now and get it around Monday, September 14

QTY:

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Fastest cross-border delivery

Features & Benefits

  • Replace various original power supplies with universal compatibility.
  • Offers a compact design with reduced depth for easier fitting.
  • Delivers 300 watts of power for reliable performance.
  • Multiple connectors including ATX, SATA, and LP4 to suit different needs.
  • Equipped with over-current and over-power protection for safety.
  • High efficiency and low noise operation ensures a quiet environment.

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