The BOYA BY-LM40 USB Lavaliere Mike, The BY-LM40 Could Be A Lavaliere Mike With USB Type-A Cable For Windows And Mackintosh Computers. This Mike Is Good For Live Streaming, Displays, Course Recordings Etc.The BOYA BY-LM40 is a high-quality omnidirectional USB clip-on Lavalier microphone for your computer.