<s>
Backup	O
Z64	B-Application
is	O
a	O
game	B-Device
backup	I-Device
device	I-Device
designed	O
by	O
Harrison	O
Electronics	O
,	O
Inc.	O
,	O
able	O
to	O
store	O
Nintendo	B-Operating_System
64	I-Operating_System
games	O
as	O
ROM	B-General_Concept
images	I-General_Concept
on	O
Zip	B-Operating_System
Diskettes	I-Operating_System
.	O
</s>
<s>
Units	O
such	O
as	O
this	O
can	O
make	O
copies	O
of	O
a	O
game	O
which	O
can	O
be	O
played	O
in	O
a	O
Nintendo	B-Operating_System
64	I-Operating_System
emulator	B-Application
.	O
</s>
<s>
Unlike	O
the	O
Doctor	B-Device
V64	I-Device
,	O
which	O
plugs	O
into	O
the	O
expansion	O
slot	O
in	O
the	O
bottom	O
,	O
this	O
backup	O
unit	O
plugs	O
into	O
the	O
cartridge	O
slot	O
,	O
so	O
the	O
Nintendo	B-Operating_System
64	I-Operating_System
perceives	O
it	O
as	O
a	O
regular	O
game	O
cartridge	O
.	O
</s>
<s>
Some	O
units	O
include	O
the	O
ability	O
to	O
add	O
Game	B-Device
Genie	I-Device
codes	O
and	O
various	O
other	O
cheats	O
and	O
saved	O
games	O
.	O
</s>
<s>
The	O
original	O
Z64	B-Application
has	O
a	O
hardware	O
set	O
limit	O
of	O
128	O
megabits	O
.	O
</s>
<s>
Features	O
of	O
the	O
Z64	B-Application
include	O
the	O
following	O
:	O
</s>
<s>
The	O
Z64	B-Application
's	O
system	O
specifications	O
are	O
the	O
following	O
:	O
</s>
