Working a few years ago.
It came with the speakers of the first PC I bought back in 1998.
I kept them for testing use until one of them died a few years ago.
The barrel jack is 5.5mm outer and 2.1mm inner. Output 9v 300mA.
AC Adapter Barrel Jack 5.5mm 2.1mm From Speakers 9V 300mA (CT9)
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