OPPO OPC3HAJH Output: DC 12V, 3A Input: AC 100-240V 50/60Hz Terminal Standard: EIAJ-4 (-) Outer diameter: 5mm (5.5mm) Inner diameter: 3.3mm (+) Pin: 1mm This is a terminal commonly used in 12V devices from domestic manufacturers such as older BUFFALO series, NEC, and I-O DATA. Cable: Approximately 1.7m (0.9m + 0.8m) Included: ・AC adapter main unit ※ There is no product box or instruction manual. Shipping: Ships within 3 days of payment confirmation. Regarding installation support, returns, exchanges, and warranty: We are unable to provide support due to this being a private, used sale. Thank you.