<s>
This	O
table	O
provides	O
summary	O
of	O
comparison	O
of	O
various	O
flash	B-Device
memory	I-Device
cards	I-Device
,	O
.	O
</s>
<s>
Card	O
family	O
Standards	O
organizations	O
Varieties	O
Entry	O
date	O
Maximum	O
commercially	O
available	O
capacity	O
PicturePictures	O
are	O
given	O
in	O
relative	O
scales	O
;	O
they	O
're	O
sized	O
to	O
be	O
WYSIWYG	B-Application
when	O
viewing	O
using	O
81	O
PPI	B-Algorithm
monitor	O
.	O
</s>
<s>
CFexpress	B-Device
Type	O
C	O
:	O
54x74x4.8mm	O
,	O
PCIe	O
3.0	O
x4	O
(	O
4.0	O
GB/s	O
)	O
,	O
NVMe	O
-	O
-	O
-	O
-PCIe	O
3.0	O
x8	O
(	O
8	O
,	O
0	O
GB/s	O
)	O
,	O
NVMe	O
SmartMedia	B-Operating_System
Toshiba	O
3.3/5	O
V	O
1995	O
128	O
MB	O
115px	O
Very	O
slim	O
(	O
45.0	O
×	O
37.0	O
×	O
0.76	O
mm	O
)	O
,	O
no	O
wear	B-Application
leveling	I-Application
controller	O
,	O
up	O
to	O
128	O
MB	O
.	O
</s>
<s>
MultiMediaCard	O
Siemens	O
AG	O
,	O
SanDisk	O
MMC	O
1997	O
16	O
GB	O
75px	O
Slim	O
and	O
small	O
(	O
24×32×	O
1.4	O
mm	O
)	O
,	O
up	O
to	O
16	O
GB	O
RS-MMC/MMC	O
Mobile	O
2003/2005	O
16	O
GB	O
75px	O
Compact	O
(	O
24×18×	O
1.4	O
mm	O
)	O
,	O
up	O
to	O
16	O
GB	O
MMCplus	O
2005	O
16	O
GB	O
85px	O
Compact	O
(	O
24×32×	O
1.4	O
mm	O
)	O
,	O
swifter	O
,	O
optional	O
DRM	O
,	O
up	O
to	O
16	O
GB	O
MMCmicro	O
2005	O
4	O
GB	O
File:Mmc-micro.PNG	O
Subcompact	O
(	O
14×12×	O
1.1	O
mm	O
)	O
,	O
optional	O
DRM	O
,	O
16	O
MB	O
to	O
4	O
GB	O
Secure	B-Device
Digital	I-Device
SanDisk	O
,	O
Panasonic	O
,	O
Toshiba	O
,	O
Kodak	O
,	O
SD	B-Device
Association	O
SD	B-Device
1999	O
2	O
GB	O
75px	O
Small	O
(	O
32×24×	O
2.1	O
mm	O
)	O
,	O
DRM	O
,	O
up	O
to	O
2	O
GB	O
.	O
</s>
<s>
See	O
Article	O
)	O
miniSD	B-Device
2003	O
2	O
GB	O
62px	O
Compact	O
(	O
15×11×1	O
mm	O
)	O
,	O
DRM	O
,	O
up	O
to	O
2	O
GB	O
.	O
</s>
<s>
See	O
Article	O
)	O
SDHC	O
2006	O
32	O
GB	O
75px	O
Same	O
build	O
as	O
SD	B-Device
but	O
greater	O
capacity	O
and	O
transfer	O
speed	O
,	O
4	O
GB	O
to	O
32	O
GB	O
(	O
not	O
compatible	O
with	O
older	O
host	O
devices	O
)	O
.	O
</s>
<s>
miniSDHC	O
2008	O
32	O
GB	O
62px	O
Same	O
build	O
as	O
miniSD	B-Device
but	O
greater	O
capacity	O
and	O
transfer	O
speed	O
,	O
4	O
GB	O
to	O
32	O
GB	O
.	O
</s>
<s>
(	O
not	O
compatible	O
with	O
older	O
host	O
devices	O
)	O
SDXC	O
2009	O
1	O
TB	O
100px	O
Same	O
build	O
as	O
SD/SDHC	O
,	O
but	O
greater	O
capacity	O
and	O
transfer	O
speed	O
,	O
32	O
GB	O
and	O
higher	O
.	O
</s>
<s>
Standard	O
goes	O
up	O
to	O
2	O
TB	O
(	O
not	O
compatible	O
with	O
older	O
host	O
devices	O
)	O
.SDUC2018not	O
yet	O
available100px	O
Same	O
build	O
as	O
SD/SDHC/SDXC	O
,	O
but	O
greater	O
capacity	O
and	O
transfer	O
speed	O
.	O
</s>
<s>
Memory	O
Stick	O
Sony	O
,	O
SanDisk	O
Standard	O
1998	O
128	O
MB	O
67px	O
Slim	O
and	O
narrow	O
(	O
50×	O
21.5	O
×	O
2.8	O
mm	O
)	O
,	O
optional	O
DRM	O
,	O
up	O
to	O
128	O
MB	O
PRO	O
2003	O
4	O
GB	O
85px(not to scale )	O
Slim	O
and	O
narrow	O
(	O
50×	O
21.5	O
×	O
2.8	O
mm	O
)	O
,	O
swifter	O
,	O
optional	O
DRM	O
,	O
up	O
to	O
4	O
GB	O
Duo	O
2003	O
128	O
MB	O
100px	O
Compact	O
(	O
31×20×	O
1.6	O
mm	O
)	O
,	O
optional	O
DRM	O
,	O
up	O
to	O
128	O
MB	O
PRO	O
Duo	O
2002-2006	O
32	O
GB	O
100px	O
Compact	O
(	O
31×20×	O
1.6	O
mm	O
)	O
,	O
optional	O
DRM	O
,	O
up	O
to	O
32	O
GB	O
PRO-HG	O
Duo	O
2007-2008	O
32	O
GB165px	O
Compact	O
(	O
31×20×	O
1.6	O
mm	O
)	O
,	O
swifter	O
,	O
optional	O
DRM	O
,	O
up	O
to	O
32	O
GB	O
Micro	O
(	O
M2	O
)	O
2006	O
16	O
GBalt	O
=	O
|39x39px	O
Subcompact	O
(	O
15×	O
12.5	O
×	O
1.2	O
mm	O
)	O
,	O
optional	O
DRM	O
,	O
up	O
to	O
16	O
GB	O
Sony	B-Device
PS	I-Device
Vita	I-Device
Memory	B-Device
Card	I-Device
2012	O
64	O
GB	O
39px	O
Subcompact	O
(	O
15×	O
12.5	O
×	O
1.6	O
mm	O
)	O
,	O
compulsory	O
DRM	O
,	O
up	O
to	O
64	O
GB	O
,	O
proprietary	O
(	O
can	O
be	O
used	O
on	O
PS	B-Device
Vita	I-Device
only	O
)	O
P2	B-Device
(	O
storage	O
media	O
)	O
PanasonicMicroP2201264	O
GBMicroP2	O
is	O
a	O
SDXC/SDHC	O
card	O
conforming	O
to	O
UHS-II	O
(	O
Ultra	O
High	O
Speed	O
bus	O
)	O
,	O
and	O
can	O
be	O
read	O
by	O
common	O
SDHC/SDXC	O
card	B-Device
readers	I-Device
.	O
</s>
<s>
xD	O
Olympus	O
,	O
Fujifilm	O
,	O
Sony	O
Standard	O
2002-2007	O
512	O
MB	O
78px	O
Slim	O
and	O
small	O
(	O
20×25×	O
1.78	O
mm	O
)	O
,	O
electrically	O
identical	O
to	O
SmartMedia	B-Operating_System
,	O
no	O
wear-leveling	B-Application
controller	O
,	O
up	O
to	O
512	O
MBFUJIFILM	O
Global	O
|	O
xD-Picture	O
Card	O
and	O
Adapters	O
Type	O
M	O
2005	O
2	O
GB	O
78px	O
Slim	O
and	O
small	O
(	O
20×25×	O
1.78	O
mm	O
)	O
but	O
slower	O
read/write	O
,	O
no	O
wear-leveling	B-Application
controller	O
,	O
up	O
to	O
2	O
GB	O
Type	O
H	O
2005	O
2	O
GB	O
78px	O
Slim	O
and	O
small	O
(	O
20×25×	O
1.78	O
mm	O
)	O
and	O
swifter	O
,	O
no	O
wear-leveling	B-Application
controller	O
,	O
up	O
to	O
2	O
GB	O
XQD	B-Device
card	I-Device
Sony	O
&	O
Nikon	O
Standard	O
2011-2012	O
>2	O
TB	O
146px	O
High-capacity	O
,	O
high-speed	O
standard	O
using	O
PCIe	O
as	O
interfaceUniversal	O
Flash	B-Device
Storage	I-Device
Card	I-Device
ExtensionsSamsungUFS	O
Card2016>256	O
GBPackages	O
the	O
flash	B-Device
memory	I-Device
,	O
currently	O
soldered	O
in	O
shipping	O
smartphones	O
,	O
into	O
a	O
removable	O
card	O
form	O
factor	O
.	O
</s>
<s>
Note	O
that	O
a	O
memory	B-Device
card	I-Device
's	O
dimensions	O
are	O
determined	O
while	O
holding	O
the	O
card	O
with	O
contact	O
pins	O
upwards	O
.	O
</s>
<s>
in	O
GiB	O
)	O
Max	O
read	O
speed	O
(	O
MB/s	O
)	O
Max	O
write	O
speed	O
(	O
MB/s	O
)	O
Read-write	O
cycles	O
Low-level	O
access	O
Operating	O
voltage	O
(	O
V	O
)	O
Voltage	O
table	O
at	O
All	O
Memory	B-Device
Cards	I-Device
,	O
note	O
that	O
some	O
cards	O
support	O
both	O
voltages	O
(	O
and	O
)	O
,	O
and	O
some	O
cards	O
are	O
available	O
in	O
distinct	O
versions	O
(	O
or	O
)	O
Controller	O
chip	O
#	O
of	O
pins	O
CompactFlash	B-Device
I	I-Device
512	O
128	O
PiB(134,217,728 GiB )	O
167CompactFlash	O
Specification	O
Rev	O
.	O
</s>
<s>
6.0	O
167	O
NOR/NAND	O
3.3	O
and	O
5	O
rowspan	O
=	O
"	O
2	O
"	O
50	O
II	O
12	O
128	O
PiB(134,217,728 GiB )	O
167	O
167	O
SmartMedia	B-Operating_System
128	O
MiB( 	O
0.125	O
GiB	O
)	O
2	O
1,000,000	O
NAND	O
3.3	O
or	O
5	O
22	O
MMC	O
MMC	O
8	O
128	O
2	O
2	O
1,000,000	O
ACP-EP	O
Specifications	O
3.3	O
rowspan	O
=	O
"	O
5	O
"	O
7	O
RS-MMC	O
2	O
2ACP-EP	O
RS-MMC	O
card	O
features	O
list	O
2	O
3.3	O
7	O
MMCmobile	O
2	O
15ACP-EP	O
MMCmobile	O
card	O
features	O
list	O
8	O
1.8	O
and	O
3.3	O
13	O
MMCplus	O
4Transcend	O
MMCplus	O
4	O
GiB	O
52MMC	O
transferred	O
at	O
up	O
to	O
52	O
MiB/s	O
52	O
3.3	O
13	O
MMCmicro	O
2	O
1.8	O
and	O
3.3	O
10Transcend	O
MMCmicro	O
card	O
(	O
TS128MMCM	O
)	O
datasheet	O
eMMC	O
2	O
TiB(2048 GiB )	O
104	O
104	O
1.8	O
and	O
3.3	O
rowspan	O
=	O
"	O
1	O
"	O
Varies	O
Secure	O
DigitalMaximum	O
transfer	O
speed	O
is	O
not	O
defined	O
by	O
SD	B-Device
standards	O
.	O
</s>
<s>
Card	O
Write	O
protection	O
switch	O
DRM	O
CompactFlash	B-Device
SmartMedia	B-Operating_System
,	O
sticker	O
(	O
optional	O
)	O
MMC	O
,	O
RS-MMC	O
rowspan	O
=	O
"	O
2	O
"	O
MMCMobile	O
,	O
secureMMC	O
SD	B-Device
Some	O
early	O
SD	B-Device
cards	I-Device
may	O
not	O
have	O
a	O
write	O
protection	O
switch.The	O
write	O
protect	O
switch	O
signals	O
to	O
the	O
host	O
,	O
which	O
is	O
responsible	O
for	O
write	O
protection	O
.	O
</s>
<s>
X	O
(	O
requires	O
an	O
eXternal	O
adapter	O
)	O
–	O
Technically	O
the	O
same	O
as	O
E	O
,	O
but	O
such	O
adapter	O
usually	O
consists	O
of	O
2	O
parts	O
:	O
a	O
pseudo-card	O
with	O
pin	O
routing	O
and	O
physical	O
enclosure	O
size	O
that	O
perfectly	O
match	O
the	O
target	O
slot	O
and	O
a	O
break-out	O
box	O
(	O
a	O
card	B-Device
reader	I-Device
)	O
that	O
holds	O
a	O
real	O
card	O
.	O
</s>
<s>
XM	O
(	O
requires	O
an	O
eXternal	O
electro-mechanical	O
adapter	O
)	O
–	O
Technically	O
the	O
same	O
as	O
EM	O
,	O
but	O
such	O
adapter	O
usually	O
consists	O
of	O
2	O
parts	O
:	O
a	O
pseudo-card	O
with	O
pin	O
routing	O
and	O
physical	O
enclosure	O
size	O
that	O
perfectly	O
match	O
the	O
target	O
slot	O
and	O
a	O
break-out	O
box	O
(	O
a	O
card	B-Device
reader	I-Device
)	O
that	O
holds	O
a	O
real	O
card	O
.	O
</s>
<s>
Sometimes	O
a	O
chain	O
of	O
adapters	O
can	O
help	O
(	O
for	O
example	O
,	O
miniSD	B-Device
→	O
CF	B-Device
as	O
miniSD	B-Device
→	O
SD	B-Device
→	O
CF	B-Device
)	O
.	O
</s>
<s>
rowspan	O
=	O
"	O
2	O
"	O
CF	B-Device
CFast	O
SM	B-Operating_System
MMC	O
Memory	O
Stick	O
SDSC	B-Device
SDHC	O
SDXC	O
xD	O
XQD	B-Device
I	O
II	O
MMC	O
RS-MMC	O
,	O
MMCmobile	O
Std	O
PRO	O
PRO	O
Duo	O
Micro	O
SDSC	B-Device
miniSD	B-Device
microSD	O
SDHC	O
miniSDHC	O
microSDHC	O
SDXC	O
microSDXC	O
Std	O
M	O
H	O
ExpressCard	B-Device
E	O
E	O
EDataFab	O
EXP	O
12	O
in	O
2	O
EDataFab	O
exp	O
12	O
in	O
1	O
E	O
E	O
E	O
E	O
EDataFab	O
exp	O
M2+microSD	O
E	O
E	O
E	O
EM	O
PCI	O
Express	O
Mini	O
Card	O
EM	O
mSATA	O
XM	O
PC	B-Architecture
Card	I-Architecture
EM	O
EM	O
E	O
E	O
E	O
E	O
E	O
PCMCIA	B-Architecture
EM	O
EM	O
E	O
E	O
E	O
E	O
E	O
CF	B-Device
I	O
+	O
+	O
E	O
E	O
E	O
E	O
E	O
E	O
EOlympus	O
MACF-10	O
xD-to-CompactFlash	O
adapter	O
E	O
E	O
CF	B-Device
II	O
+	O
E	O
E	O
E	O
E	O
E	O
E	O
E	O
E	O
CFast	O
+	O
SM	B-Operating_System
+	O
X	O
X	O
X	O
xD	O
EIn	O
March	O
2008	O
,	O
Olympus	O
started	O
shipping	O
the	O
MASD-1	O
microSD-to-xD	O
adapter	O
along	O
with	O
its	O
latest	O
compact	O
digital	O
cameras	O
,	O
with	O
a	O
shape	O
designed	O
to	O
fit	O
only	O
in	O
those	O
latest	O
cameras	O
.	O
</s>
<s>
The	O
physical	O
adapter	O
is	O
in	O
fact	O
purely	O
electromechanical	O
,	O
although	O
the	O
xD	O
and	O
SD	B-Device
protocols	O
are	O
completely	O
incompatible	O
.	O
</s>
<s>
This	O
demonstrates	O
that	O
the	O
cameras	O
themselves	O
must	O
understand	O
the	O
SD	B-Device
protocol	O
,	O
and	O
thus	O
the	O
adapter	O
is	O
more	O
properly	O
termed	O
an	O
electronic	O
adapter	O
,	O
with	O
the	O
electronic	O
logic	O
contained	O
in	O
the	O
camera	O
rather	O
than	O
the	O
physical	O
accessory	O
.	O
</s>
<s>
+	O
+	O
+	O
XQD	B-Device
+	O
MMC	O
+	O
M	O
DSD	O
cards	O
are	O
usually	O
thicker	O
than	O
MMC	O
ones	O
,	O
and	O
although	O
it	O
uses	O
perfectly	O
compatible	O
pins	O
,	O
not	O
every	O
MMC	O
slot	O
may	O
allow	O
thick	O
SD	B-Device
card	I-Device
to	O
be	O
inserted	O
MS	O
X	O
+	O
+	O
M	O
M	O
X	O
X	O
EKingMax	O
microSD	O
to	O
MS	O
PRO	O
Duo	O
Adapter	O
SDSC	B-Device
D	O
M	O
+	O
EM	O
EM	O
miniSD	B-Device
+	O
EM	O
microSD	O
+	O
SDHC	O
DSDHC	O
devices	O
are	O
backward-compatible	O
with	O
normal	O
SD	B-Device
cards	I-Device
.	O
</s>
<s>
(	O
)	O
EM	O
EM	O
+	O
EM	O
EM	O
miniSDHC	O
D	O
EM	O
+	O
EM	O
microSDHC	O
D	O
+	O
SDXC	O
uscb	O
DSDXC	O
devices	O
are	O
backward-compatible	O
with	O
SD	B-Device
and	O
SDHC	O
cards	O
.	O
</s>
<s>
(	O
)	O
EM	O
EM	O
D	O
EM	O
EM	O
+	O
EM	O
microSDXC	O
D	O
D	O
+	O
IDE	O
PATA	O
EM	O
EM	O
EStar	O
Empery	O
PT110	O
SD	B-Device
Card	I-Device
To	O
ATA	O
IDE	O
3.5	O
inch	O
Hard	O
Drive	O
Adapter	O
Serial	O
ATA	O
E	O
E	O
EM	O
PCI	O
Express	O
EM	O
USB	O
XThere	O
are	O
many	O
USB-connected	O
"	O
n-in-1	O
"	O
memory	B-Device
card	I-Device
readers	O
,	O
for	O
example	O
Belkin	O
's	O
"	O
Hi-Speed	O
USB	O
2.0	O
15-in-1	O
Media	B-Device
Reader	I-Device
&	O
Writer	O
"	O
.	O
</s>
