Rackmount may be one of the simplest looking product in LUMANTEK. However, it is the one product which can save you from all the cables and mess caused by multiple converter connections. Additionally, you only need 2 power inserts rather than using 1 power adapter for each converter.
The size of the rackmount can be 2 RU or 3 RU depending on the size of the converters you install. But it will perfectly fit into your rack with other devices.
Don't use 1 adaptor per each converter. LUMANTEK's rackmount will save you from the trouble. Use only 2 adaptors to power all 10 converters.