Make the connection Connect any line or phono device to Mac or PC via USBAdd USB (Universal Serial Bus) IO to any analogue mixer & add your computer to your setup Low-cost problem-solving tool for DJs & musicians Plug-&-play USB (Universal Serial Bus) connection for Mac & PC requires no software driver installation No external power supply needed STEREOi O is a connection box that turns analogue audio into digital signal. STEREOi O has RCA plugs for use with virtually any audio equipment from DJ mixers to turntables its other end has a USB (Universal Serial Bus) connector for your Mac or PC. You can connect any line or phono-level gear to your computer for recording mixing or processing. Or you can also use STEREOi O as an output cable from your computer to inputs on an analogue mixer enabling you to mix MP3s & other music from a computer in your standard DJ mixer.br STEREOi O is a low-cost problem-solving tool that can be invaluable for DJs & musicians at a gig or in the studio when you need to make a connection. The class-compliant USB (Universal Serial Bus) device works plug & play for Mac & PC requiring no software-driver installation or external power for operation.br STREREOi O is the perfect insurance policy for any working DJ. Never let making the connection stop you