<s>
UltraBay	B-Architecture
is	O
originally	O
IBM	O
's	O
name	O
for	O
the	O
swappable	O
drive	B-Device
bay	I-Device
in	O
the	O
ThinkPad	B-Operating_System
range	O
of	O
laptop	B-Device
computers	I-Device
.	O
</s>
<s>
When	O
the	O
ThinkPad	B-Operating_System
product	O
line	O
was	O
sold	O
to	O
Lenovo	O
,	O
the	O
concept	O
and	O
the	O
name	O
stayed	O
.	O
</s>
<s>
Furthermore	O
,	O
it	O
is	O
used	O
in	O
some	O
of	O
Lenovo	O
's	O
own	O
IdeaPad	B-Operating_System
Y	I-Operating_System
Series	I-Operating_System
laptops	B-Device
.	O
</s>
<s>
Introduced	O
with	O
the	O
ThinkPad	B-Operating_System
750	O
series	O
in	O
1995	O
,	O
this	O
technology	O
has	O
gone	O
through	O
redesigns	O
with	O
almost	O
every	O
new	O
generation	O
of	O
ThinkPad	B-Operating_System
,	O
which	O
may	O
lead	O
to	O
confusion	O
.	O
</s>
<s>
The	O
following	O
table	O
gives	O
an	O
overview	O
of	O
the	O
different	O
UltraBay	B-Architecture
types	O
,	O
in	O
which	O
models	O
they	O
occurred	O
and	O
which	O
drives	O
are	O
available	O
for	O
them	O
.	O
</s>
<s>
Note	O
that	O
the	O
optical	O
drive	B-Device
bay	I-Device
in	O
G	O
series	O
and	O
R40e	O
series	O
ThinkPads	B-Operating_System
is	O
not	O
an	O
UltraBay	B-Architecture
in	O
that	O
the	O
drives	O
are	O
fixed	O
and	O
not	O
removable	O
.	O
</s>
<s>
It	O
is	O
however	O
,	O
mechanically	O
,	O
an	O
UltraBay	B-Architecture
2000-device	O
without	O
the	O
surrounding	O
"	O
caddy	B-Device
"	O
.	O
</s>
<s>
On	O
the	O
media	O
side	O
different	O
UltraBays	B-Architecture
relate	O
to	O
the	O
form	O
factor	O
of	O
the	O
drives	O
they	O
accept	O
;	O
Some	O
machines	O
can	O
accept	O
UltraBay	B-Architecture
devices	O
up	O
to	O
12.5mm	O
thick	O
,	O
whereas	O
others	O
are	O
limited	O
to	O
devices	O
no	O
more	O
than	O
9.5mm	O
thick	O
.	O
</s>
<s>
The	O
IdeaPad	B-Operating_System
Y400	O
and	O
Y500	O
laptops	B-Device
have	O
an	O
UltraBay	B-Architecture
slot	O
which	O
can	O
be	O
swapped	O
for	O
another	O
hard	B-Device
drive	I-Device
,	O
another	O
fan	O
or	O
another	O
Nvidia	O
GT650M	O
(	O
or	O
GT750M	O
)	O
GPU	B-Architecture
which	O
will	O
work	O
in	O
SLI	B-Device
with	O
the	O
system	O
's	O
primary	O
video	O
card	O
for	O
increased	O
graphics	O
performance	O
.	O
</s>
<s>
Existing	O
orders	O
for	O
the	O
UltraBay	B-Architecture
Y500	O
DVD	O
Burner	O
(	O
no	O
built	O
in	O
optical	O
drive	O
)	O
were	O
cancelled	O
in	O
early	O
June	O
,	O
2013	O
.	O
</s>
<s>
Starting	O
in	O
2014	O
,	O
Lenovo	O
changed	O
the	O
design	O
of	O
the	O
ThinkPad	B-Operating_System
bay	O
adapter	O
and	O
dropped	O
the	O
"	O
UltraBay	B-Architecture
"	O
terminology	O
from	O
use	O
.	O
</s>
<s>
What	O
remained	O
(	O
in	O
the	O
ThinkPad	B-Operating_System
W540	O
product	O
)	O
was	O
an	O
option	O
for	O
a	O
removable	O
Serial	O
ATA	O
(	O
SATA	O
)	O
"	O
Caddy	B-Device
"	O
accessory	O
which	O
,	O
with	O
a	O
screw	O
driver	O
,	O
allowed	O
the	O
optical	O
drive	O
to	O
be	O
replaced	O
with	O
a	O
second	O
2.5	O
inch	O
SATA	O
storage	O
device	O
.	O
</s>
<s>
Battery	O
expansion	O
in	O
the	O
Caddy	B-Device
Bay	O
was	O
no	O
longer	O
offered	O
,	O
and	O
earlier	O
hot-swap	O
functionality	O
was	O
essentially	O
rendered	O
difficult	O
if	O
not	O
impossible	O
.	O
</s>
<s>
UltraBayUltraBay	O
type	O
Featured	O
in	O
Available	O
devicesUltraBay355	O
,	O
360	O
,	O
370C	O
,	O
750	O
,	O
755C	O
,	O
755CE	O
,	O
755Cs	O
,	O
755CSE	O
,	O
755CV	O
,	O
755CX	O
,	O
760C	O
,	O
760L	O
,	O
760EHDD	O
,	O
FDD	O
,	O
Battery	O
,	O
PCMCIA-cartridge	O
,	O
IBM	O
Wireless	O
Modem.UltraBay	O
Thick755CD	O
,	O
755CDV	O
,	O
760CD	O
,	O
760E	O
,	O
760ED	O
,	O
760EL	O
,	O
760ELD	O
,	O
760LD	O
,	O
760XD	O
,	O
760XL	O
,	O
765SelectaDock	O
I	O
,	O
SelectaDock	O
IIHDD	O
,	O
FDD	O
,	O
CD	O
,	O
Battery	O
,	O
PCMCIA-cartridge	O
,	O
IBM	O
Wireless	O
Modem.UltraBay	O
II770SelectaDock	O
IIIHDD	O
,	O
FDD	O
,	O
ZIP-100	O
,	O
ZIP-250	O
,	O
CD	O
,	O
DVD	O
,	O
BatteryUltraBay	O
FX390	O
,	O
i-Series	O
1720	O
,	O
i-Series	O
1721HDD	O
,	O
FDD	O
,	O
CD	O
,	O
DVD	O
,	O
BatteryUltraSlimbay600Ultrabase	O
(	O
570	O
)	O
,	O
Portable	O
Drive	O
BayHDD	O
,	O
FDD	O
,	O
ZIP-100	O
,	O
ZIP-250	O
,	O
CD	O
,	O
DVD	O
,	O
BatteryUltraBay	O
2000T20	O
,	O
T21	O
,	O
T22	O
,	O
T23	O
A20	O
,	O
A21	O
,	O
A22	O
,	O
A30	O
,	O
A31Dock	O
2631	O
,	O
Dock	O
II	O
,	O
UltraBase	O
X2	O
,	O
Portable	O
Drive	B-Device
Bay	I-Device
2000HDD	O
,	O
FDD	O
,	O
LS-120	O
,	O
LS-240	O
,	O
ZIP-100	O
,	O
ZIP-250	O
,	O
CD	O
,	O
CD-RW	O
,	O
DVD	O
,	O
Combo	O
,	O
Multi	O
,	O
BatteryUltraBay	O
PlusR30	O
,	O
R31	O
,	O
R32	O
,	O
R40T23	O
,	O
T30A30	O
,	O
A31Ultrabase	O
X3HDD	O
,	O
FDD	O
,	O
LS-120	O
,	O
LS-240	O
,	O
ZIP-100	O
,	O
ZIP-250	O
,	O
CD	O
,	O
CD-RW	O
,	O
DVD	O
,	O
Combo	O
,	O
Multi	O
,	O
Battery	O
,	O
PDA-Cradle	O
,	O
NumPad.UltraBay	O
SlimT40	O
,	O
T41	O
,	O
T42	O
,	O
T43	O
,	O
T60	O
,	O
T61T40p	O
,	O
T41p	O
,	O
T42p	O
,	O
T43p	O
,	O
T60p	O
,	O
T61pZ60t	O
,	O
Z61tThinkPad	O
X4	O
Dock	O
,	O
UltraBase	O
X4	O
,	O
UltraBase	O
X6	O
,	O
UltraBase	O
X6	O
TabletHDD	O
,	O
DVD	O
,	O
Combo	O
,	O
Multi	O
,	O
Battery	O
,	O
Serial-Parallel	O
Port	O
Adapter	O
(	O
T60	O
–	O
61	O
,	O
some	O
R60	O
–	O
R61	O
)	O
.UltraBay	O
EnhancedR50	O
,	O
R51	O
,	O
R52	O
,	O
</s>
<s>
R60	O
,	O
R61Z60m	O
,	O
Z61m	O
,	O
Z60p	O
,	O
Z61pThinkPad	O
Advanced	O
DockHDD	O
,	O
DVD	O
,	O
Combo	O
,	O
Multi	O
,	O
BD-RW	O
,	O
BatterySerial	O
UltraBay	B-Architecture
SlimT500	O
,	O
T400	O
,	O
T400s	O
,	O
T410	O
,	O
T410s	O
,	O
T420s	O
,	O
T430sW500X200	O
UltraBase	O
,	O
X220	O
UltrabaseHDD	O
,	O
DVD	O
,	O
Combo	O
,	O
Multi	O
,	O
BD-RW	O
,	O
Battery	O
(	O
UltraBay	B-Architecture
Slim-Battery	O
)	O
.Serial	O
UltraBay	B-Architecture
EnhancedR400	O
,	O
R500	O
T510/T510i	O
,	O
T520	O
,	O
T420	O
,	O
T530	O
,	O
T430W700	O
,	O
W510	O
,	O
W520	O
,	O
W530	O
HDD	O
,	O
DVD	O
,	O
Combo	O
,	O
Multi	O
,	O
BD-RW	O
(	O
3mm	O
gap	O
visible	O
)	O
.Fixed	O
Serial	O
UltraBay	B-Architecture
EnhancedL510	O
,	O
L410	O
,	O
</s>
<s>
L530	O
,	O
L430DVD	O
,	O
Combo	O
,	O
Multi	O
,	O
Travel	O
Cover	O
,	O
HDD	O
(	O
with	O
UltraBay-Adapter	O
for	O
Third-party	O
source	O
)	O
.Fixed	O
Serial	O
UltraBay	B-Architecture
SlimL440	O
,	O
L540T440p	O
,	O
T540pW540	O
,	O
W541	O
P70	O
,	O
P71	O
,	O
P72HDD	O
,	O
DVD	O
,	O
Combo	O
,	O
Multi	O
,	O
Travel	O
Cover	O
.	O
</s>
