COMPAQ 277978-001 Power Supply PDP-121 277919-001 PS-6221-2C 220W

( Brand: Compaq ), ( Manufacturer Part Number: 277978-001 ), ( Type: Power Module ), ( Maximum Power: 220 W ), ( Unit Type: Unit ), ( Cooling: 1 Fan ), ( Color: Silver ), ( Country Of Origin: China )

Review COMPAQ 220w Power Supply Fully Tested

Introducing the Compaq 277978-001 PDP-121 277919-001 PS-6221-2C 220W Power Supply, a reliable and efficient solution for powering your Compaq desktop computer. This power supply unit (PSU) is specifically designed for the Compaq desktop models and is essential for providing a stable and uninterrupted power supply to your system.

The PS-6221-2C power supply boasts a maximum output power of 220 watts, which ensures that even power-hungry components are given the necessary power to run efficiently. The 220W output is distributed across various voltage rails, including 3.3V, 5V, 12V, and -12V, to cater to the diverse power requirements of modern desktop computers.

The Compaq PS-6221-2C power supply is built with high-quality components and advanced circuitry to deliver superior performance and unparalleled reliability. It features Active Power Factor Correction (PFC) technology, which ensures optimal power transfer from the wall outlet to the computer, reducing energy wastage and improving overall system efficiency.

Moreover, the power supply is equipped with over-current protection, over-voltage protection, and short-circuit protection, which safeguard your system against potential power surges, voltage spikes, and short-circuits. These safety features not only prolong the lifespan of your components but also ensure peace of mind for users.

In terms of design, the Compaq PS-6221-2C power supply is compact and sleek, with dimensions of 150mm (L) x 82mm (W) x 149mm (H) and a weight of approximately 1.4 kg. Its modern form factor makes it an ideal choice for users who prioritize aesthetics while maintaining functionality.

Lastly, the PS-6221-2C power supply is compatible with the following Compaq desktop models: 277978-001, 277919-001, and is a direct replacement for the original power supply. Upgrading or replacing an aging power supply with this new unit ensures your Compaq desktop continues to perform at its best, providing a more stable and efficient power supply.

The Compaq 277978-001 PDP-121, 277919-001 PS-6221-2C 220W power supply is a component commonly used for computer systems. Here are some pros and cons that might help you make an informed decision about purchasing this power supply unit (PSU).

1. Reliability: Compaq is a reputable brand known for producing reliable computer components, including power supplies.

2. Adequate Power: With a 220W capacity, this power supply should be sufficient for most entry-level to mid-range computer systems.

3. Multi-GPU Support: This PSU offers support for multiple graphics cards, making it a suitable choice for systems with multiple GPUs.

4. Affordability: Compared to some high-end power supplies, the Compaq 277978-001 PDP-121, 277919-001 PS-6221-2C 220W power supply is quite affordable.

1. Limited Warranty: The power supply comes with a limited warranty, which may not be as extensive as some other brands' offerings.

2. Efficiency: This power supply has an 80 certification, which means it is less energy-efficient compared to newer, more advanced power supplies.

3. Noise Level: Some users have reported that this power supply can be noisy under high load, which might be a concern for those who value a quiet computing environment.

In conclusion, the Compaq 277978-001 PDP-121, 277919-001 PS-6221-2C 220W power supply is a reliable and affordable option for those building or upgrading a computer system that doesn't require excessive power. However, it may not be the most efficient or quiet power supply available on the market. If you're looking for a high-performance power supply with advanced features, this may not be the best choice for you. Ultimately, the decision to purchase this power supply depends on your specific needs and budget.

If you're building a computer system with a modest power requirement and a limited budget, the Compaq 277978-001 PDP-121, 277919-001 PS-6221-2C 220W power supply could be a good option for you. However, if you're looking for a power supply with better efficiency, quiet operation, or extended warranty coverage, it might be worth considering other options from more specialized brands.

Details:

May need minor cleaning. Fully tested.

part #: 277978001 prices

• $20.00-$39.99

specifications powsuppy:

• brand: Compaq
• mpn: 277978-001
• type: Power Module
• maximum power: 220 W
• unit type: Unit
• cooling: 1 Fan
• color: Silver
• country of origin: China

seller powsuppy:

• # reviews: 260
• city: Lancaster, Ohio
• rating: 100.0%

offer powsuppy:

• availability: In Stock
• quantity: 1
• started: February 6, 2026
• sold: 0
• best offers: True
• options: Ship-to-home

returns powsuppy:

• policy: No Returns

shipping powsuppy:

• cost: $11.23
• transit: 4-11 Days
• type: Calculated
• service: USPS Ground Advantage, USPS Priority Mail
• class: Standard, Expedited
• carrier: USPS

payments powsuppy:

• wallet: Paypal
• credit card: Discover
• other

general powsuppy:

• Computers/Tablet's Networking > Computer Components Parts > Power Supplies
• condition: Used

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