[DETAIL]<br>Details:<br>USB Bluetooth 2.0/5.0/5.4 for laptops and PCs | USB Bluetooth CSR V2.0/5.0/5.4 | Bluetooth CSR 2.0/5.0/5.4 adapter | Additional Bluetooth for computers/laptops<br>This USB Bluetooth V2.0/5.0/5.4 enables wireless data connection between computers and Bluetooth enabled devices, mobile phones, personal digital devices, and other devices that can wirelessly connect to computers. The devices can be interconnected within a range of 20m. The connection speed is faster than previous USB Bluetooth devices.<br>USB Bluetooth 5.4 specifications:<br>-Support simultaneous connection of multiple devices (up to 7 devices can be connected)<br>-5.4 Bluetooth dual-mode dual channel, compatible with Bluetooth 2.0, 3.0, 4.0, 5.0, 5.1, and 5.3 specifications.<br>-Intelligent low-power chip, RF transceiver, providing lower latency, flexible and powerful Bluetooth applications<br>-Supports Cass2 power level within a distance of 20 meters (in open environments)<br>-Supports Bluetooth 5.4 dual-mode specification (LMP 13. X true Bluetooth 5.4 standard)<br>-Supports USB 2.0/3.0 interfaces<br>-Working temperature -20 to 70 ℃<br>-Supporting operating systems: Windows 8.1、 10. 11 (No driver required, plug and play, Win7 system computers can install drivers for use)<br>-Supporting protocols: HFP/HSP (Hands Free Phone/Earphones) A2DP/AVRCP (Stereo Music) HID/HOGP (Keyboard and Mouse)/ACC, Android Smartphones, etc<br>-This product is equipped with the Taiwan Ruiyu True Bluetooth 5.4 chip. Firmware version - LMP: 13.XX<br>-Supports dual-mode EDR/LE stereo audio transmission<br>-The transmission efficiency is 2 times faster than Bluetooth 5.0, the data transmission speed is 8 times faster, and the power consumption is reduced by 50%.<br>USB Bluetooth 5.3, 5.0, and 2.0 specifications:<br>-Only one device can be connected at a time, so the microphone cannot be used with the headphones<br>-USB Bluetooth Wireless Data Transfer CSR 5.0 Dongle<br>-Manufacturer: Crypto Dog<br>model: SCR 5.0/SCR 2.0<br>-Warranty: 03 months, 1 exchange 1<br>-Function: Wireless data transmission connection between computer and Bluetooth device<br>-100% brand new product, full box<br>-Windows 10 and above versions do not require driver installation<br>USB 5.4 can be used with many devices (so you can listen and speak using Bluetooth earphones with microphones)<br>USB 5.3、 5.0 and 2.0 use one device (therefore can only be used for listening with headphones, not microphone)<br>USB Bluetooth version is backward compatible with devices<br>For example, USB Bluetooth 5.4 can connect Bluetooth 5.4, 5.0, and 2.0 devices, while USB Bluetooth 2.0 can only connect Bluetooth 2.0 devices.<br><br>[ATTRIBUTES]<br>- Support vehicle-mounted: No support<br>- Antenna Type: Internal<br>- USB Interface: USB 2.0<br>- Support vehicle-mounted: No support<br>- Antenna Type: Internal<br>- USB Interface: USB 2.0<br>- Bluetooth Version: Bluetooth 5.3<br>- High-concerned chemical: None<br>- Model Number: 5.3<br>- Origin: Mainland China