Sound Blaster Audio Mic Splitter Adapter SPLIT YOUR AUDIO OUTPUT AND MICROPHONE INPUT - a cost-effective and convenient way to connect your existing headset to notebooks or PCs without you having to buy a new one. FORWARD - COMPATIBLE - for newer gaming headsets that have a single, combined 3.5mm 4-pole jack for both audio output and microphone input. AN EXTENSION CABLE - it can be used as an extension of the audio and microphone connectors located at the back of the PC. Thus, you can easily and quickly connect your headset to the PC instead of fiddling with the cables at the back PC, which may not be readily accessible.