DC 21V 1A Power Supply Adapter, Replacement Charger Adapter Charging Cable, Univ
Input: AC 100-240V, 50/60Hz. Output: DC 21V, 1A (1000mA). Adapters connector DC polarity: inside positive (+). outside negative (-). DC jack converter size: 5.5mm x 2.5mm, compatible with 5.5mm x 2.1mm DC port.