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Description:Item Name: bluetooth5.1 Adapterbluetooth Version: bluetooth V5.1+EDR V2.1/2.0/3.0/4.0Interface: USB 2.0Frequency Range: 2.400-2.480GHzTransfer Rate: 3MbpsDistance: 0-20MSupported: Free driver for win 8/ 8.1 / 10 /10.Item Size: 21x16x5 mmFeature:1. Mini USB bluetooth 5.1 adapter with high..