One for Headphone Jack on your PC/Laptop, the other for Mic Jack on your PC/Laptop. 3.5mm stereo y-splitter cable allows you to easily connect your stereo headset & Mic to a PC audio port and mic port at the same time, enabling you to add a mono microphone input as well as a stereo output to your PC or Laptop through a single 3.5mm audio port. Special Features 24K Gold Plated for better sound quality and less loss Input: 3.5mm 4-position female(TRRS) for headset or earphone Output: 3.5mm 3-position(TRS) male for Audio Jack on your PC / Laptop Output 3.5mm 3-position(TRS) male for Mic Jack on your PC / Laptop Flexible cable length: 30cm Package: 3.5mm Female to Dual Male Headphone Splitter Cable x 1