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Product photos and specifications are made available by Universal Databases and are often based on new products.
When the item is a 'Refurbished product' it has been tested by us and has an A-grade condition (unless otherwise stated). Refurbished items do not include cables, software media and manuals (unless otherwise stated).
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Description
The HP 640 Redundant/External Power Supply Shelf is used with the HP 2920 Switch Series to provide redundant power to back up internal power supplies in the switches, as well as provide external power for applications where additional power is required, as in PoE+ applications. Unit ships ready to be populated with at least one optional power supply and power cable, purchased separately.