<s>
The	O
Modified	B-Device
Modular	I-Device
Jack	I-Device
(	O
MMJ	O
)	O
is	O
a	O
small	O
form-factor	O
serial	B-Protocol
port	I-Protocol
connector	O
developed	O
by	O
Digital	O
Equipment	O
Corporation	O
(	O
DEC	O
)	O
.	O
</s>
<s>
It	O
uses	O
a	O
modified	O
version	O
of	O
the	O
6P6C	O
modular	B-Architecture
connector	I-Architecture
with	O
the	O
latch	O
displaced	O
off-center	O
so	O
standard	O
modular	B-Architecture
connectors	I-Architecture
found	O
on	O
Ethernet	O
cables	O
or	O
phone	O
jacks	O
cannot	O
accidentally	O
be	O
plugged	O
in	O
.	O
</s>
<s>
MMJ	O
connections	O
are	O
used	O
on	O
Digital	O
minicomputers	B-Architecture
,	O
such	O
as	O
the	O
PDP-11	B-Device
,	O
VAX	B-Device
and	O
Alpha	B-Device
systems	O
,	O
and	O
to	O
connect	O
terminals	O
,	O
printers	O
,	O
and	O
serial	B-Device
console	I-Device
servers	I-Device
.	O
</s>
<s>
When	O
connecting	O
two	O
DTE	O
devices	O
such	O
as	O
a	O
computer	O
and	O
a	O
printer	O
,	O
the	O
Digital	O
BC16E	O
crossover	B-Protocol
cable	I-Protocol
is	O
used	O
.	O
</s>
<s>
The	O
Lego	B-Application
Mindstorms	I-Application
sets	O
,	O
beginning	O
with	O
the	O
NXT	B-Application
,	O
used	O
similar	O
plugs	O
for	O
motors	O
and	O
sensors	O
to	O
prevent	O
the	O
connection	O
of	O
standard	O
telephone	O
cords	O
.	O
</s>
