NEC AL1-002507-001 Output: DC 12V 1.5A Input: AC 100V 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 3.1m (1.9m + 1.2m) Included: ・AC adapter body ※ No product box or instruction manual. Regarding installation support, returns, exchanges, and warranty: We are unable to provide support due to this being a private, used sale. Thank you for your understanding.