|The Media Carousel Plus electronically organizes up to 150 discs and can automatically serve up a CD or DVD in seconds! Use the keypad to retrieve discs or use the USB connection and software to build a searchable database on your computer... one click and any disc is called up! A built-in single port USB hub in the Media Carousel Plus lets you connect another Carousel electronic organizer or other USB accessory, such as a mouse or scanner, without an additional hub. Twelve bright blue LEDs light up when a selection has been made, flash while rotating and remain on for 20 seconds once the disc media is delivered.Includes USB cable and software. Software requires Microsoft Windows 98SE+.