SUNNY SYS1381-1212-W2 Operation confirmed. Output: DC 12V, 1A Input: AC 100-240V 50/60Hz Terminals: (-) Outer diameter 5.5mm (+) Inner diameter 2.1mm This is a common terminal used for 12V devices such as ELECOM and BUFFALO routers. Cable: Approximately 2m Included: ・AC adapter main unit ※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.