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WHAT IS A "U" or more specifically a "RACK UNIT"?
Article Number: 11 | Rating: 3/5 from 1 votes | Last Updated: Wed, Aug 17, 2011 at 2:16 PM
As in 1U, 2U, 4U ... etc
A "Rack Unit" or "U" is an Electronic Industries Alliance or more commonly "EIA" standard measuring unit for rack mount type equipment. This term has become more prevalent in recent times due to the proliferation of rack mount products showing up in a wide range of commercial, industrial and military markets. A "Rack Unit" is equal to 1.75" in height. To calculate the internal useable space of a rack enclosure you would simply multiply the total amount of Rack Units by 1.75". For example, a 44U rack enclosure would have 77" of internal usable space (44 x 1.75).
Stealth manufactures computers and peripherals that are designed to fit into a standard EIA size rack enclosures. Stealth's Rackmount PCs, LCD Monitors and Keyboards are available in many sizes and configurations. The slim space saving series rack products are available in 1U (1.75") and 2U (3.5") in overall height. Since rack space is at a premium these slim products represent significant cost savings to the end user. Standard rackmount products are available in 1U, 2U, 4U, 5U and 6U configurations.
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