1 pcs USB 2.0 Ethernet 10/100 Network LAN RJ45 Adapter 1 pcs Bluetooth Receiver boardUniversal Micro-USB 5V power supply.External 3.7-5V lithium battery power supply modification. Bluetooth mode blue light is onStandard 3.5mm interface, output stereo sound source, can insert earphones, connect power amplifier and other equipment. Support Profile A2DP/AVCTP/AVDTP/AVRCP/HFP.Pairing instructions: Connect to the power supply, the blue indicator light flashes, and enter the Bluetooth mode; when you hear the voice broadcast The Bluetooth device is ready to pair, it means that you enter the Bluetooth mode and wait for pairing; after the mobile phone Bluetooth searches for XY-BT, Click Connect. When you hear the voice broadcast TheBluetooth device is connected successfully,It means that the decoder board is successfully connected to the mobile phone, and the blue indicator light is on, and the music can be played, and the blue indicator light flashes.USB 2.0 Ethernet 10/100 Network LAN RJ45 Adapter:Automatically negotiates 10/100 Mbps connection rate, depending on speed of the networkFull-speed (12Mbps) USB deviceSupports Full Duplex Flow Control (IEEE 802.3x)Compatible with Windows 98SE / 2000 / ME / XP / Vista (32bit Only); NOTE: Not for Apple MAC OS systemGive your laptop or desktop computer more connectivity with an RJ-45 (aka Ethernet) Adapter.Simply plug it into your computers USB port and hook up Driver CD included.Note: if youve ever struggled with a cable thats two inches too short to reach the port, you need this Material: Metal + PlasticBluetooth Receiver board:size: 30 x 30mmMaterial:Electronic componentcolour:redPackage Contents:1 x USB 2.0 Ethernet 10/100 Network LAN RJ45 Adapter1 x Bluetooth Receiver boardOnly the above package content, other products are not included.Note: Light shooting 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.