I first bought the Moto H500 USB because it's cute, comes in bubble gum pink or lime green, its blurb says it's for VOIP, it is very tiny; and Plantronics' web site was selling this Voyager 510 USB for $200. Well, the moto thing didn't have Windows compatible drivers and crashed my PC about 5 times before I gave up. This was after having to research the Skype site for help. Surprising for Moto that they were obviously trying to sell it as a consumer product but didn't bother to make installation and activation easy.