PLEASE NOTE: This product is 1 piece! Putting two on the picture is to let you understand it more intuitively.USB BT Transmitter Receiver:① Transmitter mode: Transmit audio from non-BT audio sources (TV,PC,CD/DVD player, etc) to BT headset/speaker via 3.5mm audio cable. ② Receiving mode: Transmit the audio of the BT audio source (smartphone, tablet, BT TV) to the non-BT headset/speaker/car/home audio system through the 3.5mm audio cable. (NOTE:Only audio can be transmitted, video and files cannot be transmitted) | Wide range of applications: This USB BT 5.0 adapter can be used for almost all devices with audio input/output (3.5mm auxiliary audio interface).When used with Bluetooth headsets or Bluetooth speakers, you can easily enjoy music and TV programs without affecting others and ensuring privacy. (USB 5V power supply, don’t worry about running out of power when listening to music) | USB audio transmission:Transmitter mode: ① Transmit audio through the USB port (wireless transmission). ②The audio is transmitted through the AUX port 3.5mm audio cable. Receiver mode: The audio is transmitted to the speaker through the AUX port 3.5mm audio cable. | One Key Answering/hanging up calls:in Receiver mode, when you have an incoming call, press the button to answer the call hands-free | One Key Switch Mode:Simply press a button to quickly switch transmitter/receiver mode.After this Bluetooth Transmitter Receiver adapter is powered on, red light in TX - Transmitter mode, blue light in RX - Receiver mode.

DB9 Solderless RS232 D-SUB Serial to 9pin Port Terminal male Adapter Connector Breakout Board,the housing is designed with a folding buckle for easy assembly and disassembly without tools. | This RS232 D-SUB male serial adapter 9pin port breakout board is designed of double-sided PCB board,prevent signal crosstalk. All signal ports are clearly named and labeled on both sides of the board for quick wiring. | This DB9 Breakout Connector to Wiring Solderless Terminal can connect all kinds of serial devices.Such as computer,industrial control equipment, cash register, tax control machine, automatic control equipment, industrial instrumentation and other equipment for communication. | Compatible with 3 cable sizes,Cable Hole Dia:5mm/0.2'' ,6mm/0.23'' ,7mm/0.27''.The soft rubber sheath can effectively prevent the cable from breaking when it is bent. | This DB9 breakout connector to wiring solderless terminal adopts environmentally friendly insulated terminal block. Just use a small screwdriver to open up the terminal blocks, slide in your stranded or solid-core wire, and re-tighten.

❤【with 3.5mm Audio Jack Design】:This HDMI to VGA adapter with 3.5 mm audio jack,we provide an additional 3.5mm audio cable(50cm/19.68inch),allows to connect your audio devices to stream audio and video simultaneously.Tips:If the audio does not work,please be sure to fully insert the 3.5 audio cable into the bottom of the audio port to ensure that there is no space.NOTE: If there is no audio output or the audio is noisy, please set the input source to PCM/LPCM | ❤【Widely Used】:HDMI male plug connects desktop computer, laptop,game console,tablet,P3,P4,DVD player,cable box or other device with HDMI port; VGA female socket connects monitor,projector,HDTV.Note: It is NOT a bi-directional converter and cannot transmit signals from VGA to HDMI.Only HDMI to VGA is supported converter | ❤【Maximum Resolution 1080P】:this black HDMI male to VGA female adapter supports video resolutions up to 1920x1080p (Full HD).Note: When the monitor or screen is not working, please reduce the resolution of the monitor or screen to 1080P or below | ❤【Plug and Play】:No driver or no software required.Compact convenient,it's very convenient to carry and use,gold plated HDMI connector | ❤【Low Power Consumption】:HDMI devices only need to provide DC 5V,≥140mA power output capability to work

VGA dustproof caps are Enduring and perfect for protecting VGA male port from dust,liquid and oxidation rust. Effectively reduce the static,to avoid a breakdown event. | VGA anti dust cap can prevent the VGA male connector from bending the pins caused by external force. | Designed to fit DB15Pin and DB9Pin male ports.(Note:just for VGA male end). | Easy to put on and take off, 50pcs/package, one pack can meet your need. | Please check the product size carefully before purchase to match your VGA male port.Prevent too loose or too tight.