NEC AL 1-002242-002 Output: DC 12V 700mA 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 1.8m Operation confirmed. Included items: ・AC adapter main unit ※ 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.