HP ProCurve 600$518.00 to $1,374.00

The HP ProCurve 600 Redundant and External Power Supply provides 12V RPS for up to 6 stackable switches and 2 ports with 370W 50V PoE.
Manufacturer:Hewlett Packard Product MPN MPN | J8168A#ABA | Key Features Wattage | 729 Watt | Dimensions Width | 12.8 in. | Depth | 17.4 in. | Height | 1.7 in. | Weight | 11.77 lb. | Miscellaneous UPC | 829160221786 |
Tags:hp, procurve, 600,
| Antec Signature 850$228.00 to $368.00

The Signature 850 features DC to DC voltage regulator modules which ensure greater system stability, and an 80mm Pulse Width Modulation (PWM) fan which can run up to 50% quieter than standard fans.
Manufacturer:Antec Product MPN MPN | 0761345-22850-3 | Key Features Wattage | 850 Watt | Number of Fans | Single Fan | Compatibility | EPS12/ATX12 | Power Properties DC Output | +3.3V @ 25A, +5V @ 25A, +5VSB @ 3A, +12V @ 22A, +12V (2nd) @ 22A, -12V @ 0.5A | Other Features MTBF | 100000 Hours | Dimensions Width | 5.9 in. | Depth | 7.1 in. | Height | 3.4 in. | Weight | 6.14 lb. | Warranty Warranty | 5 Years | Miscellaneous UPC | 761345228503 |
Tags:antec, signature, 850,
| Antec BP500U$37.00 to $70.00

This Antec BP500U power supply unit provides power of 500 watts, it's fully compatible with ATX 12V.
Manufacturer:Antec Product MPN MPN | BP500U | Key Features Wattage | 500 Watt | Compatibility | ATX 12V | Power Properties DC Output | +3.3V @ 30A, +5V @ 30A, +5VSB @ 2.5A, +12V @ 18A, +12V (2nd) @ 18A, -12V @ 0.3A | Other Features MTBF | 80000 Hours | Dimensions Width | 5.8 in. | Depth | 5.5 in. | Height | 3.5 in. | Weight | 3.7 lb. | Miscellaneous UPC | 00761345235006 |
Tags:antec, bp500u,
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The StealthXStream, kept supremely cool with a large 120mm fan, features a standard ATX power supply form factor resulting in a compact footprint to accommodate virtually all computer towers.

ATX12V version 2.2 80mm low noise cooling fan Dual 12Voutputs - 12V2 for Motherboard and peripherals; 12V1 for processor Industrial-grade protection circuitry prevents damage resulting from short circuts, power overloads, over voltage, and under voltage 80 PLUS certified

This Zalman Tech (ZM460B-APS) power supply unit provides power of 460 watts, it's fully compatible with ATX 12V.

Athenatech manufactures professional computer cases and power supplies. The PS-400WX1 is a 400Watts Pentium ready power supply featuring 20 pin + 4 pin ATX-12V power connector, an 8 cm fan, 2 x Serial ATA (SATA) hard disks power connectors and Intelligent transformable mainboard connectors.