Use your in-ear monitor microphone with desktop PCs that have separate audio and microphone inputs. Splits a single 3.5mm jack into two separate audio and microphone ports. Who is this for? You need this splitter if your PC has separate 3.5mm ports for audio and microphone and you want to use one of our in-ear monitor cables with microphone. Who is this not for? You do not need this splitter if: You are not buying the microphone cable You are using a device with a single 3.5mm combo jack for both audio and microphone (for example, gaming controllers, most laptops, and some PCs - check your ports) Designed for Wave and Wave Pro.