Specification BatteriesRequired : 1 Brand : Plantronics BulletPoint1 : Package Dimensions: 3.9 L x2.1 H x3.5 W (inches) BulletPoint2 : Country of Origin : Mexico BulletPoint3 : Ism maximum Frequency: 2.40 GHz BulletPoint4 : Bluetooth Standard: Bluetooth 2.0 BulletPoint5 : 【Corresponding System】Compatible with the system that can output USB digital audio like Windows 10/8/7/Mac OS/iOS/Android/PS3/PS4/PS4 Pro/Nintendo Switch/USB-A/USB-C (OTG)/Micro-USB (OTG) BulletPoint6 : Up to 7 Devices Sync Connected - BT541 Bluetooth 5.4 dongle for PC Laptop supports up to 7 different types of devices to be connected and can work together at the same time without interfering with each other, Which means that you can listen to high-quality music while using the keyboard mouse or other devices. But If Bluetooth audio devices of the same type (such as speakers/headphones) are connected, only one of them can play music. BulletPoint7 : Warm Tips – 1. Ensure there is no Bluetooth built-in the computer. If there is, please be sure to disable all existing Bluetooth devices in "Device Manager" at first, then insert the adapter and try again. 2. If you have any question about the driver installation or product usage, you can contact our reliable customer service via Amazon Message, and we will reply to you quickly within 24 hours. Color : Green Color1 : Black Color2 : Silver CompatibleDevices : Desktop CompatibleDevices1 : Tablet CompatibleDevices2 : Desktop CompatibleDevices3 : Keyboard CompatibleDevices4 : Smartphone CompatibleDevices5 : Any Game kit Bluetooth Controller ConnectivityTechnology : Ethernet ConnectivityTechnology1 : bluetooth ConnectivityTechnology2 : usb ConnectorType1 : Micro USB ConnectorType2 : USB Type C ControlMethod : remote DataLinkProtocol : Bluetooth DataLinkProtocol1 : Bluetooth DataLinkProtocol2 : USB DataTransferRate : 33 megabits_per_second ExternallyAssignedProductIdentifier1 : 017229139480 ExternallyAssignedProductIdentifier2 : 0017229139480 ExternallyAssignedProductIdentifier3 : 00017229139480 ExternallyAssignedProductIdentifier4 : 0712885942176 FinishType : Abs GpsrSafetyAttestation : 1 HardwareInterface1 : usb HardwareInterface2 : bluetooth HardwareInterface3 : bluetooth_4_0 HardwareInterface4 : usb HardwareInterface5 : usb2.0 HardwareInterface6 : usb3.0 IncludedComponents1 : 1 x BT541 Bluetooth 5.4 USB Adapter IncludedComponents2 : 1 x User Manual ItemDisplayDimensions_Height : 2 inches ItemDisplayDimensions_Length : 4 inches ItemDisplayDimensions_Width : 4 inches ItemName : Plantronics BT300 Bluetooth 2.0 - Bluetooth Adapter for Headset ItemPackageDimensions_Height : 5.2 centimeters ItemPackageDimensions_Length : 8.8 centimeters ItemPackageDimensions_Width : 9.8 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : bluetooth-network-adapters Manufacturer : Plantronics MaximumUpstreamDataTransferRate : 300 megabits_per_second ModelName : BT300 Bluetooth 2.0 - Bluetooth Adapter for Headset ModelNumber : 89259-01 ModemType : cellular NumberOfItems : 1 NumberOfPorts : 1 PackageLevel : unit PartNumber : 89259-01 PowerPlugType : no_plug ProductDescription : It's no need to install driver and license, plug and play, idea for enjoying movies and playing games. When it is difficult to connect to Bluetooth headset, please refer the following steps to try to pair with Bluetooth headset. 1. Turn off Bluetooth of other Bluetooth transmitting devices like smartphone/iPad. 2. Please make sure your Bluetooth headset/speaker has no connection with other devices, and is in pairing mode. 3. After plug this product into USB jack, please long press button for 10 seconds, and the rapid flashing TX LED indicator will pause temporarily, then immediately continue to flash rapidly. Initialization reset is complete at this time, and it will automatically search and pair with Bluetooth headpset. 4. Some Bluetooth headsets are in pairing mode after power on, but at this time it only can connect to the Bluetooth devices that have been paired before. If you want to pair with an Bluetooth device that didn't pair before, please let the headset indicator flash quickly or refer to the headset manual. ProductSiteLaunchDate : 2013-04-22T13:39:25.527Z ShipsGlobally : 1 Size : Mini Size SpecificUsesForProduct : business SpecificUsesForProduct1 : PC SpecificUsesForProduct2 : Tablet SpecificUsesForProduct3 : Smartphone SpecificUsesForProduct4 : Speaker SpecificUsesForProduct5 : Headphones StreetDate : 2019-02-15T00:00:01Z Style : Latest BT5.4-Tiny BT541 SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 TotalEthernetPorts : 1 UnitCount : 1 UnspscCode : 43211614 WarrantyDescription : 2 YEAR Manufacturer Limited WarrantyDescription1 : Hakimonoe products are tested and certified by the strictest labs in the world. We have BQB, FCC, IC, CE, RoHS, and many other certifications for most products. WarrantyDescription2 : 30-Day Money-Back Guarantee for ANY Reason: For 30 days after the date of purchase, return your undamaged Hakimonoe product and receive a Full-Refund for ANY reason. WarrantyDescription3 : 12-Month Warranty for Quality-Related Issues: For 12 months after the date of purchase, we take care of all quality-related issues with a REPLACEMENT. Reminder: Be sure to use your product as directed.