T540p、 W540 、W541. L540、 T440p 、T440 、. X240、T440s、 L440、. Compatible with Lenovo ThinkPad. Bluetooth 4.0 Smart Ready (low energy): Dual-mode Bluetooth 4.0 connects to the newest low-energy Bluetooth products, as well as your familiar devices, such as headsets, keyboard, mice, and more.
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