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The Poly CS540 (formerly Plantronics) Go to product viewer dialog for this item.

: Primarily designed for desk phones via an RJ9 port. It can connect to a PC with the optional APU-75 adapter . Purchase Considerations When buying the buy cs540

: It offers a roaming range of up to 350 feet (120 meters) and features a noise-canceling microphone to filter out office background noise. The Poly CS540 (formerly Plantronics) Go to product