Background: Now the new notebooks / tablet PC among of them are only own one 3.5MM headset interface. However, many wired headphones are 2 interface(one is audio port, the other is Mic port), this adapter line can help you solve the problem and overcome the of some audio ports, by turning a single laptop limitation.The item is a 3.5mm 4 pole male port convert to dual 3.5 female ports.Turns a 3.5mm combo headphone/microphone port into two distinct ports - one 3.5mm headphone jack and one 3.5mm microphone port.It can be used with any portable device that uses a 4 pole 3.5mm jack, such as For iPhone iPod iPad devices and other notebooks / tablet PC.Outer cover fiber woven material, good tensile resistance.Model Number: 3.5mm Cable AdapterConnector A: Mini USB,AUX,RCAConnector B: JackGender: Male-FemaleType: Audio Extension CordBundle: Bundle 1Application: ComputerFeature: NoneShielding: Non-ShieldedConverter: Audio ConverterLength: 20cmFeature 1: 3.5mm 4 Pole Male Port Convert To Dual 3.5 Female PortsFeature 2: One 3.5mm Headphone Jack One 3.5mm Microphone PortFeature 3: 3.5mm 1 in 2 Wire SplitterFeature 4: 1 Male To 2 FemaleFeature 5: Headphone/Mic Y Splitter Cable AdapterCompatible Model: For Smartphone Tablet LaptopSpecification: One male ports: for 4-pole audio port on your Notebooks / tablet PC.( CTIA Standard)Two female ports: one for Headphone Jack, the other one for Mic Jack.colour: blackMaterial: Nylon + plasticsize: jack: 3.5mmLength: 20cmPackage Contents: 1 X 3.5mm Mic Cable AdapterImportant Note: This adapter is not a headphone splitter/Y-cable. It cannot be used to split the audio output to two separate sets of headphones or speakers. Only 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.