16 MIDI input channels and 16 MIDI output channels LEDs indicate power in, MIDI in the signal and MIDI signal out USB bus; Does not require external power Supports XP, 7 Cable length: 2.0 m (6 ft) How to use: 1. Connect the "up" to the MIDI "OUT" jack of a MIDI keyboard Cable (or MIDI device). 2. Connect the "OUT" to the MIDI "IN" socket of a MIDI keyboard Cable (Of MIDI device). 3. Plug the USB cable into a free USB port on the computer, The red LED is lit to show the power supply. 4. Open up your music software program, such as , Sonar, MIDI connections, 5. Set the music to MIDI in And MIDI-out devices "USB Audio Device" 6.Your USB MIDI interface is now ready for use. Use the registration matters: USB has not been successfully driven, you need to change the interface to drive or download the driver to drive the computer's USB drive Material: plastic Color: as shown Specification: Bluetooth profile: V5.0 ,A2DP,,AVRCP Bluetooth: V5.0 Transmission Distance: 10m / 33ft Charging: Micro-USB 5V/0.5A Audio Port: 3.5mm Main Item Size:62 x 25 x 13.3mm Package Contents: 1 X Bluetooth Transmitter&Receiver 1 X 3.5MM Audio Cable 1 X User Manual 1 X USB electronic organ music line Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. 1.NEW DESIGN: The first Bluetooth receiver with a LCD display screen has come. You can have all the information of the wireless streaming status from a simple glance at the screen. It shows Bluetooth connection status. 2.BLUETOOTH 5. 0 RECEIVER: Installed with Bluetooth 5. 0 chip, new wireless music receiver has an unrivalled performance with 2 times faster transmission speed, stronger connection stability and signal range of 10M than the older version. 3.BLUETOOTH COMPATIBLE: This audio Bluetooth adapter support 3.5mm aux audio, and also compatible with all smartphones, bluetooth audio devices (Bluetooth headphones, Bluetooth speakers and much more). set2: 1 X Bluetooth Transmitter&Receiver + 1 X USB electronic organ music line 5.CLEAR SOUND: A2DP support voice prompts, gets high-quality audio sound, offers you 30 feet operation range with good performance, gives you a good experience when answering the phone or watching late-night shows. In order to get clear sound, we recommend NOT using the 3.5mm Bluetooth transmitter-receiver while charging. 4.TRANSMITTER RECEIVER MODE: 2in1 design, by using this wireless adapter, you can send and receive all of the audio freely and easily. Transmitter enables your TV, AV Receiver, Radio and other home audio source devices to stream music to your Bluetooth headphones or speakers; Receiver lets non-Bluetooth devices like your home stereo or AV Receiver and wirelessly stream music from your cellphone/PC.