<s>
Dynamic	B-Device
device	I-Device
mapping	I-Device
is	O
a	O
technology	O
for	O
USB	B-Protocol
KVM	B-Device
switches	I-Device
which	O
is	O
sometimes	O
implemented	O
as	O
an	O
alternative	O
to	O
standard	O
USB	B-Protocol
keyboard	B-Device
and	O
mouse	B-Device
emulation	O
.	O
</s>
<s>
Reverse	B-Device
DDM	I-Device
(	O
short	O
for	O
Dynamic	B-Device
Device	I-Device
Mapping	I-Device
)	O
,	O
on	O
the	O
other	O
hand	O
,	O
is	O
a	O
related	O
technology	O
that	O
allows	O
further	O
flexibility	O
in	O
regard	O
to	O
specific	O
USB	B-Protocol
ports	O
.	O
</s>
<s>
With	O
DDM	O
(	O
Dynamic	B-Device
Device	I-Device
Mapping	I-Device
)	O
Technology	O
,	O
the	O
communication	O
between	O
shared	O
peripherals	B-Device
and	O
all	O
connected	O
systems	O
are	O
maintained	O
100%	O
of	O
the	O
time	O
,	O
even	O
as	O
a	O
user	O
switches	O
between	O
the	O
KVM	O
ports	O
.	O
</s>
<s>
This	O
makes	O
generic	O
device	O
emulation	O
unnecessary	O
as	O
the	O
DDM	O
allows	O
each	O
connected	O
computer	O
system	O
to	O
believe	O
all	O
connected	O
I/O	B-General_Concept
devices	I-General_Concept
are	O
remaining	O
connected	O
even	O
as	O
the	O
KVM	B-Device
switch	I-Device
might	O
move	O
to	O
another	O
port	O
.	O
</s>
<s>
With	O
Reverse	B-Device
DDM	I-Device
,	O
an	O
administrator	O
can	O
provide	O
port	O
level	O
management	O
control	O
.	O
</s>
<s>
Individual	O
USB	B-Protocol
ports	O
can	O
be	O
limited	O
,	O
configured	O
,	O
or	O
assigned	O
to	O
specific	O
kinds	O
of	O
devices	O
.	O
</s>
<s>
This	O
adds	O
a	O
level	O
of	O
security	O
in	O
certain	O
environments	O
that	O
require	O
no	O
USB	B-Protocol
thumb	O
drives	O
to	O
be	O
used	O
,	O
or	O
printers	O
connected	O
,	O
etc	O
.	O
</s>
