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 Adapter Connector A: Mini USB,AUX,RCA Connector B: Jack Gender: Male-Female Type: Audio Extension Cord Bundle: Bundle 1 Application: Computer Feature: None Shielding: Non-Shielded Converter: Audio Converter Length: 20cm Feature 1: 3.5mm 4 Pole Male Port Convert To Dual 3.5 Female Ports Feature 2: One 3.5mm Headphone Jack One 3.5mm Microphone Port Feature 3: 3.5mm 1 in 2 Wire Splitter Feature 4: 1 Male To 2 Female Feature 5: Headphone/Mic Y Splitter Cable Adapter Compatible Model: For Smartphone Tablet Laptop Specification: 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: black Material: Nylon + plastic size: jack: 3.5mm Length: 20cm Package Contents: 2 X 3.5mm Mic Cable Adapter Important 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.