mouse has PS/2 plug, so surely can use PS/2 protocol?

From: Dan Jacobson (jidanni_at_jidanni.org)
Date: 02/22/04


Date: Mon, 23 Feb 2004 05:21:59 +0800

Is it true that with any mouse with a PS/2 plug, one should be able to use
Option "Device" "/dev/psaux"
Option "Protocol" "PS/2"

(If so, then why not with my Trackman Marble+ ?)