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300W - 399W Computer Power Supplies

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Featured

Apex 300W ALLIED ATX12V POWER SUPPLY
Now you ve finally decided which CPU, motherboard and video card you want to put into your new computer. But what are you going to do about the power
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17% OFF

$33.59 $27.99

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Featured

Startech.Com 350-Watt ATX12V 2.01 Dell Replacement Computer Power Supply
This 350 Watt ATX12V 2.01 Dell PC Power Supply is a reliable upgrade or replacement for many compatible Dell computers. It offers dual 12V power rails to deliver stable power to demanding components, as well as both 2... More details »

$49.99

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Featured

Cooler Master Elite RC-330-KKR1 Black SECC ATX Mid Tower Computer Case 350W Power Supply
The Cooler Master Elite case offers stylish, professional design that lives up to its L337 street cred! Sleek black exterior is constructed of sturdy cold-rolled steel, and mesh-vented front for superior ventilation. ... More details »

$56.63

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Featured

Dt GPS350AB200 350W Power Supply ATX
350W Power Supply ATX. Warning: Computers and computer circuit boards as well as other electronic equipment contain lead which is a chemical known to the State of California to cause cancer or cause birth defects and ... More details »

$22.00

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Sparkle Power FSP300-60GNV 300W SFX12V Power Supply
Output Voltage: 12V DC @ 16A, 12V DC @ 8A, 3.3V DC @ 18A, 5V DC @18A, 5V DC @ 2A MTBF: 100000 Hour Input Voltage Range: 90V AC to 265V AC Input Current: 4A @ 110V AC/2A @220V AC 2 x 12V Rails More details »

$49.00

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CX-350B ATX12V Power Supply (350W)
The Coolmax CX-350B ATX12V Power Supply's high performance components are designed for extra long life and provide maximum system performance. It's Heavy duty transformers designed to support high performance system s... More details »

$25.99

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StarTech 350W ATX Power Supply
StarTech ATXPW350DELL ATX Power Supply - 350W, 80mm, Dual +12V Rails, For DellÂ® PCs
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18% OFF

$72.99 $59.99

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power supply - redundant - 350 Watt
Cisco - Power supply - redundant ( plug-in module ) - AC 100-240 V - 350 Watt - for Catalyst 3560X-24 3560X-48
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$349.99

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APEX Allied AL-A300ATX ATX 300W Power Supply
Input Voltage: 132 V AC 264 V AC. Input Voltage Range: 90 V AC to 132 V AC 180 V AC to 264 V AC. Output Voltage: 3.3 V DC 5 V DC 12 V DC 5 V DC 12 V DC. Frequency: 47 Hz to 63 Hz. Output Power: 300 W. 1 x 20 pin AT... More details »

$23 – $52

from 9 Stores
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Antec BP350 350-Watt Power Supply
For: ATX 12V, Power: 350 Watt, Single Fan
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$25 – $55

from 21 Stores
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Silent PurePower 350 Watt ATX 12V AC Power Supply
This power supply gives you the power you need, at just the right temperature.
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ON SALE!

$30 – $42

from 2 Stores
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StarTech com 300W Pro ATX PC Computer Power Supply Pentium 4 ATXPOW300PRO
Picture above is the actual picture of the power supply. StarTech ATXPOW300PRO Power Supply Replacement This will replace your StarTech ATXPOW300PRO power supply or your money back. This Athena AP-MPS4ATX40 400 watt a... More details »

ON SALE!

$35 – $73

from 20 Stores
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Coolmax CA-300 300W ATX12V AC Power Supply - 300 W
Input Voltage: 100V AC to 132V AC/200V AC to 264V AC Compatibility: Intel P4/AMD Current 28A @ 3.3V DC - Output Current 30A @ 5V DC - Output Current 15A @ 12V DC - Output Current 0.3A @ -5V DC - Output Current 0.8A @ ... More details »

$20 – $40

from 12 Stores
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Coolermaster RS350-PSARI3-US Elite 350 Watts Psu
The reliable efficient and affordable line of Elite power supplies is ideal for mainstream and basic computing systems. Built with quality components and dual +12V outputs the Elite series is fit to handle demands of ... More details »

$28 – $53

from 15 Stores
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Startech Power Supply For and Systems
Replace that older or non-functioning power supply with StarTech.com's ultra-reliable ATXPOWER300 300 watt power supply. The ATXPOWER300 is guaranteed compatible with Intel Pentium and AMD processors and designed for ... More details »

ON SALE!

$33 – $60

from 17 Stores
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StarTech.com 350 Watt ATX12V 2.01 Computer PC Power Supply w/ 20 & 24 Pin Connector
This high quality 350 Watt ATX12V 2.01 power supply offers a reliable PC power solution, with support for modern dual-core CPU designs as well as PCI Express and SATA device connections. Compliant with ATX12V 2.01 rev... More details »

$40.12

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Antec MT-352 Micro ATX Power Supply - 88% Efficiency - 350 W - Internal - 110 V AC, 220 V AC
Created exclusively for the Antec Minuet 350 microATX case, the MT-352 upgrade power supply provides all the functionality of the MT-350 and adds 80 PLUS Bronze certification for increased efficiency over its predeces... More details »

$47.24

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Hp DCJ300201P 300W Power Supply for San Switch
Category: Power Supply. Warranty: 30 days. Warning: Computers and computer circuit boards as well as other electronic equipment contain lead which is a chemical known to the State of California to cause cancer or caus... More details »

$108.00

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StarTech 350 Watt ATX12V 2.01 Replacement Power Supply for Dell PC
This 350 Watt ATX12V 2.01 Dell PC Power Supply is a reliable upgrade or replacement for many compatible Dell computers (see compatible models below). It offers dual 12V power rails to deliver stable power to demanding... More details »

$46.80

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Intel C18955002 Enermax Eg365PVe 350W Power Supply
Output: 350W. Meet AMD K7 and Intel ATX +12V 1.1 and ATX 2.03 version. FCA function (Fan On/ Off Controlled by M/B and Adjustable) sleeping mode power supply. FM (Fan Speed Monitoring) Function. Low Noise. More details »

$27.00

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LiteOn YX309 Lite On 300W Power Supply Ps630102
Internal relay and external switch for switching on/off. Selectable 110V or 220V switch. Full Support for P4 and AMD CPU s. Three Cooling Fans with chrome grills. Extremely quiet power supply. More details »

$30.50

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CA-350 ATX12V Power Supply - 350 W (Internal - 110 V AC, 220 V AC)
The CA-series are easy to use, easy to install, and simple to casual users, but still maintains high power efficiency. The CA-series provides just the right amount of watts to meet your needs and more. Good for casual... More details »

$28.99

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Intel 681374006 Skcbpower 350W Power Supply
Category: Power Supply. Wattage: 350W. Warning: Computers and computer circuit boards as well as other electronic equipment contain lead which is a chemical known to the State of California to cause cancer or cause bi... More details »

$47.25

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Delta Electronics DPS338AB C 300W Power Supply
Power Provided: 330 Watt. Compatibility: Server motherboard with AMD Athlon CPU. Category: Power Supply. Warranty: 1 Year. Packaging: Bulk. Warning: Computers and computer circuit boards as well as other electronic eq... More details »

$39.50

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Diablotek Legend Case/ 350W Power Supply
Diablotek Legend Case/ 350W Power Supply
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17% OFF

$71.99 $59.99

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Sparkle SPI3501UHB204 350W 80Plus 1U Switching Power Supply
Specifications. Mfr Part Number: SPI3501UHB204. Features:. Complied with ATX 12V and EPS12V standard. Active Power Factor Correction (PFC) meet EN6100032. High efficiency and reliability. Compatible with European Unio... More details »

$100.13

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StarTech 300w Power Supply For Intel and AMD Systems
A reliable upgrade or replacement power supply for desktop PCs. This StarTech.com power supply offers an upgrade or replacement to a variety of Intel or AMD-based ATX desktop computer systems. Compliant with the indus... More details »

$35.24

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LiteOn It PS630102 300W Power Supply
Maximum Power: 300W. Warning: Computers and computer circuit boards as well as other electronic equipment contain lead which is a chemical known to the State of California to cause cancer or cause birth defects and ot... More details »

$30.50

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Intel C34808002 Fxxcbl350K 350W Ac Psu For Server 1350E
Intel believes in innovation and is driven by it. Intel is behind everything from the fastest processor in the world to the cables that power highspeed Internet. Intel keeps innovating because it s part of its heritag... More details »

$40.50

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Dt 725874001 Intel 300W Power Supply
Power Provided: 330 Watt. Compatibility: Server motherboard with AMD Athlon CPU. Warning: Computers and computer circuit boards as well as other electronic equipment contain lead which is a chemical known to the State... More details »

$39.50

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Seasonic SS300ES 300W 80 Plus Bronze Power Supply
Specifications. Mfr Part Number: SS300ES BRONZE. Features:. Specification compliance: ATX 12V v2.2 EPS 12V v2.9. Support the latest Intel AMD Socket. PCIExpress SATA ready. Double forward converter circuit. High ef... More details »

$53.24

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Apex 300W ATX 12V Switching Power Supply - ATX12V Power Supply
AL-A300ATX -Input range: 90 132V or 180V 264Vac -Frequency: 47 63Hz -Input Current:350W 8A/4A @ 115/230 Vac -Efficiency: 65% at full load, nominal line
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$24.24

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CoolMax 350W 120MM Silent Cooling Fan Switching Power Supply
Coolmax s initial task of providing cooling solutions for electrical and industrial applications using AC and DC voltage fans is its solid foundation. The company s commitment to excellence in both products and servic... More details »

$27.75

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Sparkle Power 300W ATX12V Power Supply - ATX12V Power Supply
High efficiency and reliability Remote On/Off function Re-settable power shut down 100% Hi-pot, ATE, and burn-in tested
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$37.24

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Cisco 300W Hot-plug Redundant Power Supply - 300W - Redundant Power Supply
CISCO, PWR-C49-300AC 341-0103-01 CATALYST 4900 4948 300W AC POWER SUPPLY, USED
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$315.99

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StarTech.com Professional Computer Power Supply (Internal) - 300W - ATX Power Supply
A high performance and reliable upgrade or replacement power supply for desktop PCs. The StarTech.com Professional series of power supplies provide a high-quality and reliable upgrade or replacement option for a varie... More details »

$37.97

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Sparkle SPI300GLSB204 SFX 12V 300W 80plus Power Supply
Specifications. Mfr Part Number: SPI300GLSB204. Features: . Complied with SFX12V standard. Active Power Factor Correction (PFC) meet EN6100032. High efficiency and reliability. Compatible with European Union Directive... More details »

$56.70

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Antec Basiq VP350 ATX12V & EPS12V Power Supply - 75% Efficiency - 350 W - Internal - 110 V AC, 22...
The VP350 is crafted for quality, performance and incredible value. This entry-level solution gives you everything you need in a power supply. No twinkle lights or glittery paint jobs - a 120 mm fan for effective and ... More details »

$35.24

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Intel A72233008 350W Power Supply
Device Type: AC Power Supply. Power Provided: 350 W. Output: +5V/12A +12V/0.5A +5Vsb/2A +12Vdc1/16A +12Vdc2/16A +3.3V/16A. Input: 100127V / 4.96A 200240V / 2.48A. Misc Features: Maximum continuous load on the combined... More details »

$67.50

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Hp 436957001 300W 24 Pin Power Supply
Computers and computer circuit boards as well as other electronic equipment contain lead which is a chemical known to the State of California to cause cancer or cause birth defects and other reproductive harm. Please ... More details »

$33.50

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