Tested working in very good lightly used condition. Does not come with a PSU. You only need a power supply if you plan to use the device's built-in USB ports. For basic audio functions like playing sound through your monitors or headphones, the M-Audio Air Hub is USB bus-powered and will work perfectly when plugged directly into your computer.

The M-Audio Air Hub is a desktop USB audio monitoring interface with a built-in 3-port hub, designed for musicians and DJs. It includes software for monitoring audio and offers convenient USB connectivity for easy setup. The compact and versatile form factor makes it suitable for use in small studio setups, providing a reliable and user-friendly solution for audio monitoring needs. Made by M-Audio, a reputable brand in the music equipment industry, the Air Hub is a high-quality product originating from China.