The USB-ED 01 is a Sennheiser sound card cable which allows you to connect a Sennheiser Easy Disconnect headset to a PC.The cable contains a standard mono sound card and it works with any wired Easy Disconnect headset from Sennheiser and with any PC via the USB connection.The USB-ED 01 ensures easy connectivity when using softphones for managing calls.Benefi ts and Features:- Connect the Sennheiser Easy Disconnect headset to a PC via the USB port- Connect the headset to your softphone and manage calls- Change between different Sennheiser Easy Disconnect headsets- A blue LED lights up the cable to signal when it’s ready for use.