But no devices made in the past 20 years have a PS/2 port, so why should this thing require a PS/2 keyboard? That's just plain odd.
This PS/2 keyboard uses USB.
Then we have different definitions of PS/2 keyboard. For me PS/2 keyboard means one with the round plugs named for IBM's PS/2 keyboard slots (as distinct from USB slots). In later models the plugs were color-coded light green.
Thanks. Then I agree the article should make clearer which meaning applies.