Mairdi MRD-USB001 (USB adaptor cord, Standard USB 2.0 Plug )

Plug and Play technology, with individual sound card, apply to any software including windows98/2000/XP/7, Compatible with all USB-capable computers, For IP, VoIP or Skype phones and other PC-based voice solution, With volume controller: Speaker Volume Up and Down, Mic volume On and Off Nice design of LED indicator for microphone mute, With P-QD or G-QD, widely compatible with most call center headsets