Used AC adaptor has an input of 100-240Vac and dual DC outputs of +5V/3A and +12V/3A.
https://ebay.io/m/I8Y4Ky
This black power supply unit includes a detachable AC power cord and a fixed DC output cable with a 4-pin DIN connector. The unit is manufactured by Jentec Technology Co., Ltd. and features multiple safety certification marks.