The VS11 is
the M7061-YA / M7062 / M7064 Q-BUS board set.
That don't make sense. The VS11 was a Unibus device. The Qbus equivalent
was the VSV11, which was then replaced by the VSV21 (I have one of those).
From waht I remember, the VS11 was a VSV11 (Qbus) with
a DW11-B
(Unibus-Qbus interface).
-tony