ABC Products® Replacement Dymo DC 24V / 24 V Volt Adapter Power Supply Cable Cord and Wall Plug for 4XL, 310, 315, 320, 330, 400, 450 Label Thermal / Twin Turbo / Turbo Labels Printer / Duo Printer / Dymo LabelWriter + more        

Underneath your Dymo, near the adapter hole it will state DC 24V.
• 10 Ft / 3 Metres Extra Long Cable        
• 1 Year Warranty