dedicated

believing that something is very important and giving a lot of time and energy to it:

a dedicated father/teacher

She's completely dedicated to her work.

The Green Party is dedicated to protecting the environment.

The Boy Scouts organization is dedicated to helping boys become moral and productive adults.

designed to be used for one particular purpose:

a dedicated computer

a dedicated sports channel

The company designs its own clothes and sources them directly from dedicated factories in China.

They decided to spend £2,000 setting up each of the at-home operators, equipping them with PCs and dedicated phone lines.