If you mean an adapter to plug a Razer headset into a computer and have both the Microphone and the Audio work, that can be done using a cable like this:
http

/www.amazon.com/EZOPower-Headset-Adapter-Smartphone-smartphone/dp/B0046FMRGA/
It is a EZOPower 1431400648 cable. Note that this is a 4 position cable (stereo sound / stereo mics). The worst case is that you will need a mono to stereo adapter plugged on to the end of the microphone connector of this splitter for the microphone to work. You can get an adapter like that at:
http

/www.amazon.com/Monoprice-107121-2-5mm-Adaptor-Plated/dp/B005KP2AJY/
Since it is a $7 cable and a $3 adapter, I hope you live in the USA and have an Amazon Prime account so you get free shipping
Good luck!