USB Wirele Bluetooth Adapter 2 In1 Bluetooth5.0 Transmiter Receiver Stereo For TV Laptop Speaker Headset Car Audio Adapter Product Description1.Transmitter Mode (TX): Wirelely transfer audio from your non-Bluetooth TV, home stereo system, or CD player to your Bluetooth headphones or speakers.2.PC Audio Transmitter Mode: Wirelely transfer audio from the PC, notebook to Bluetooth headset or speaker through USB port, no audio cable is required.3.Receiver Mode (RX): Wirelely transfer audio from your Bluetooth-enabled phone, tablet, or computer toyour wired stereo, speakers, or headphones.This portable, lightweight wirele audio transmitter and receiver is the ideal wirele audio solution for every situation and application, and can be used with computers, mobile phones, televisions, home speakers, and car speakers. Use the latest Bluetooth 5.0 technology, fast transmiion speed, high-quality stereo music, enjoy the convenience of Bluetooth technology for life. SpecificationsModel: MSD135Technologies: BT5.0, A2DP, AVRCP (receiver mode only)Operation Range: Up to 10m / 33ft (without any blocking objects)Pairing name(Receiver mode ):M135TX:Transmitter mode,red LED light is onRX:Receiver mode,blue LED light is on Package Content1x Bluetooth 5.0 Audio Transmitter/Receiver Adapter1x 3.5mm Aux Cable(and rca cable if you selected)1x User Manual Mode switching:Use the TX/RX switch to switch modes.TX is the transmiion mode(red LED).RX is the receiver mode(blue LED)There is no built-in battery, and it is powered by DC 5V usb interfaceInsert usb power, the red light is on in the transmitting mode, the red light flashes when pairing, and the red light is always on after the pairing succeeds.Insert usb to power on, the receiving mode is blue light, the blue light flashes when pairing, the blue light is always on after pairing is succeful.Use for computer:When you use it on your computer. No need audio cable and no driver required, plug and play (only audio can't transmit data).How to use: Switch to the transmitting mode (TX), the red light flashes, and the Bluetooth speaker or Bluetooth headset is turned on at the same time, it will be automatically paired. After the pairing is succeful, the red light will be on.Use for other devices:When used on other non-computer devices with audio output, such as a TVHow to use:Plug one end of the audio cable into the audio output of the TV and the other end into the audio of the M135.Plug the M135 into the usb (DC 5V) and confirm that it is in TX mode (red light flash). The M135 will automatically search for Bluetooth headset or Bluetooth speaker pairing.Use for home speakers/ car speakers, etcM135 can help home speakers, wired headphones, car speakers, etc. without Bluetooth.Bluetooth connection with your phone.How to use:Plug one end of the audio cable into the audio output of the speaker and the other end into the audio of the M135.Plug the M135 into usb (5V DC) and confirm that it is in RX mode (blue light flash). Find the pairing name in the Bluetooth settings of the phone: M135, click to pair.