Power Supplies are optimized for space and energy efficiency.

UNO Power series includes 10 power supplies, covering output ratings from 5–48 Vdc, that are available in 25, 30, 40, 55, 60, 90, and 100 W versions. Promoting energy conservation

[source: http://news.thomasnet.com/fullstory/Power-Supplies-are-optimized-for-space-and-energy-efficiency-20029831]