<s>
The	O
IT8212	B-General_Concept
,	O
or	O
more	O
correctly	O
the	O
IT8212F	O
,	O
is	O
a	O
low-end	O
Parallel	B-Protocol
ATA	I-Protocol
controller	O
designed	O
by	O
ITE	O
Tech	O
.	O
</s>
<s>
Depending	O
on	O
the	O
implemented	O
BIOS	B-Operating_System
and	O
configuration	O
the	O
IT8212F	O
functions	O
in	O
either	O
a	O
RAID	B-Architecture
or	O
an	O
ATAPI	O
mode	O
,	O
supporting	O
up	O
to	O
four	O
devices	O
using	O
dual	O
channels	O
.	O
</s>
<s>
The	O
raid	B-Architecture
mode	O
only	O
supports	O
IDE	O
Hard	O
Disk	O
Drives	O
and	O
includes	O
RAID	B-Architecture
0	O
,	O
RAID	B-Architecture
1	O
,	O
Raid	B-General_Concept
0+1	I-General_Concept
and	O
JBOD	O
,	O
along	O
with	O
a	O
"	O
normal	O
"	O
mode	O
that	O
essentially	O
acts	O
as	O
a	O
standard	O
Hard	O
Disk	O
controller	O
.	O
</s>
<s>
Optical	O
disk	O
drives	O
such	O
as	O
CD-ROM	B-Device
and	O
DVD	O
drives	O
are	O
supported	O
by	O
the	O
ATAPI	O
mode	O
,	O
which	O
also	O
supports	O
Hard	O
Disk	O
Drives	O
at	O
the	O
loss	O
of	O
all	O
RAID	B-Architecture
functions	O
.	O
</s>
<s>
RAID	B-Architecture
functions	O
are	O
implemented	O
by	O
an	O
embedded	B-Architecture
microprocessor	I-Architecture
,	O
thus	O
is	O
not	O
a	O
so-called	O
"	O
Soft	O
raid	B-Architecture
"	O
controller	O
.	O
</s>
<s>
Different	O
implementations	O
have	O
significant	O
incompatibilities	O
,	O
requiring	O
BIOS	B-Operating_System
updates	O
and/or	O
converting	O
from	O
one	O
feature	O
set	O
to	O
another	O
in	O
driver	O
code	O
,	O
causing	O
inconvenience	O
to	O
users	O
.	O
</s>
<s>
The	O
controller	O
's	O
BIOS	B-Operating_System
is	O
normally	O
stored	O
in	O
a	O
dedicated	O
on-board	O
Flash	O
Memory	O
Device	O
,	O
except	O
that	O
when	O
the	O
controller	O
is	O
integrated	O
into	O
a	O
motherboard	O
its	O
BIOS	B-Operating_System
and	O
the	O
motherboard	O
's	O
BIOS	B-Operating_System
are	O
often	O
combined	O
into	O
one	O
.	O
</s>
<s>
Upgrading	O
the	O
BIOS	B-Operating_System
can	O
be	O
difficult	O
at	O
best	O
.	O
</s>
<s>
Others	O
use	O
devices	O
not	O
supported	O
by	O
ITE	O
's	O
BIOS-flashing	O
utility	O
,	O
though	O
some	O
users	O
have	O
reported	O
success	O
with	O
the	O
utility	O
Uniflash	O
.	O
</s>
<s>
The	O
BIOS	B-Operating_System
cannot	O
be	O
configured	O
for	O
both	O
RAID	B-Architecture
and	O
ATAPI	O
functioning	O
at	O
once	O
,	O
so	O
users	O
may	O
be	O
prevented	O
by	O
a	O
manufacturer	O
's	O
decision	O
from	O
changing	O
between	O
these	O
modes	O
.	O
</s>
<s>
As	O
of	O
2005	O
,	O
the	O
IT8212	B-General_Concept
is	O
used	O
in	O
low-end	O
RAID	B-Architecture
cards	O
,	O
such	O
as	O
this	O
.	O
</s>
