Amazon.com: UpBright 5V AC/DC Adapter Compatible with Behringer U-Phoria UMC404HD UMC404 HD UMC 404 HD UPhoria 4 x 4 USB Audio MIDI Interface Audiophile 4x4 MIDAS Mic Preamplifier 5VDC 1000mA Power Supply
Behringer UMC404HD is the best audio interface for a low budget - YouTube