Finally, PureLink brings order to the chaos of the modular extension category. Up till now, modular extension modules have all been too small for rack mounting, creating a messy, cluttered jumble of small black boxes in the rack. Able to mix fiber optic and CAT5 extensions, the new RF Series featurespower supply for up to six modules per chassis, eliminating a lot of small adapter type power supplies, housed in a 1RU rack housing. Performance, reliability, and value. PureLink is first again with this exclusive new way to deal with extension system modules.