Analog PC headsets with a Dual 3.5 mm jack are perfect item for Internet PC chat/telephony, speech recognition, video conferencing. Some Desktop PC has a sound card on the back side of PC. Analog PC headset could connect the sound card which has Dual 3.5 mm jack port. Dual 3.5 mm ports are a microphone and a speaker port. Package Deal of "Quick disconnect headset + Analog PC adapter is a good solution with Price benefit. It works with IP telephony and VOIP include MSlync, Skype. Plantronics Quick Disconnect Headset + Sound card Adapter
