Plantronics
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Nov 20, 2025· 8 min read
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Plantronics CS540 C054 vs C054A: The Grey-Market Difference
Bought a CS540 that won't connect or has poor range? Before troubleshooting, check one letter on the base. C054 is the North American model; C054A is a European unit that can't ...
Nov 20, 2025· 8 min read