For those who love systems and structure, owning a 19-inch rack with just one slot filled ... His first attempts involved drilling 1U panels to attach gear with removable faceplates.

According to Wikipedia (under the entry “19-inch rack”), a revised EIA standard in 1992 gave us today’s 1.752-inch (44.5-mm) 1U height. Responses to my blog post offer several opinions.

Those with 1U and 2U racks are all too familiar with ... This specification has defined 19-inch racks for 50 years, but does not cover all of the relevant features that should be considered ...

Providing for an instant fault-tolerant system, the PowerCassete Rack (Model TPCHR1U2) is a 1U high, 19" rack capable of holding two of the company's PowerCassette switching power supplies.

For electronic equipment racks (e.g., 19 or 23 inches wide), the term 1U is used to define one rack unit of height ... here are a couple of handy conversion factors: 1 inch = 25.4 millimeters (mm), 1 ...

The Open19 design packs standard servers into bricks within a standard 19-inch rack, claiming to cut the cost ... installed into cages within a normal rack. The bricks can be 1U or 2U high and either ...