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,
| Zalman Tech ZM460B-APS$82.00 to $127.00

This Zalman Tech (ZM460B-APS) power supply unit provides power of 460 watts, it's fully compatible with ATX 12V.
Manufacturer:Zalman Tech Product MPN MPN | ZM460B-APS | Key Features Wattage | 460 Watt | Number of Fans | Single Fan | Compatibility | ATX 12V | Miscellaneous UPC | 823884004618 |
Tags:zalman, tech, zm460b-aps,
| Corsair Memory CMPSU-850TX$128.00 to $237.00

The Corsair TX power supplies are engineered using technology and components typically found with high performance power supplies. With design features such as a dedicated, single +12V rail offer the maximum compatibility with the system components.
Manufacturer:Corsair Memory Product MPN MPN | CMPSU-850TX | Key Features Wattage | 850 Watt | Number of Fans | Single Fan | Compatibility | EPS12/ATX12 | Power Properties DC Output | +3.3V @ 30A, +5V @ 30A, +5VSB @ 3A, +12V @ 70A, -12V @ 0.8A | Other Features MTBF | 100000 Hours | Dimensions Width | 5.9 in. | Depth | 6.3 in. | Height | 3.4 in. | Warranty Warranty | 5 Years | Miscellaneous UPC | 843591003346 |
Tags:corsair, memory, cmpsu-850tx,
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This Ultra Products Ultra Lifetime LS500 ATX12V & EPS12V Power Supply - 500W - ATX12V & EPS12V Power Supply power supply unit provides power of 500 watts, it's fully compatible with ATX.

This Ultra Products X3 1600-WATT Modular Psu power supply unit provides power of 600 watts, it's fully compatible with ATX.

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

This Antec BP500U power supply unit provides power of 500 watts, it's fully compatible with ATX 12V.