Buying GuidePlantronics 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 th...
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Nov 23, 2025· 7 min read
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Plantronics CS540 vs CS540-XD vs CS545-XD: What's the Difference?
The CS540 and its XD siblings look identical — the differences are invisible, and entirely about frequency and battery. Here's what "XD" actually means (Extra Density), how the ...
Nov 23, 2025· 7 min read
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