picoPSU-80 12V DC-DC ATX Mini-ITX 0-80W PowerSupply (Electronics)
Have now 4 office computer with the J1900 motherboards, eg ASRock Q1900B-ITX motherboard socket (micro-ATX, 2x DDR3 memory, 3x USB 2.0, the need in the operation (including a SSD) only 11 -. 17 watts and have only the normal ATX . port (no 4-pin CPU