How many mm is 42U? A 42U rack or cabinet can house equipment whose total height when placed into the rack is no more 73.5inches or 186.69cm (18.67m) with 1U=1.75inches or 44.45mm.
What is 2U and 4U rack? The height of this rack is expressed in “units” called U (unit). 1U is 1.75 inches. So, 2U is 3.5 inches high and 4U is 7 inches high. This rule was established by the Electronic Industries Association (EIA).
What does 2U mean? 2U means “To You.” The abbreviation 2U is a cyber term used in text-based conversations to mean “To You.” For example: Happy birthday 2U! All the best 2U.
What is 2U rack? The ‘U’ in any server description is short for “RU” which stands for Rack Unit — this is the standardized designation for the form factor of the server: 1U = 1.75″ in height or thickness. 2U is 1.75″ x2 = 3.5 inches. All rackmount servers are 19″ in width.