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8GB MMC SD SDHC Memory Card Reader to USB 2.0 Adapter
8GB MMC SD SDHC Memory Card Reader to USB 2.0 Adapter
US $3.77
Electronics DYNEX COMPACT MEMORY CARD READER MMC/SD/SDHC/SDXC/MS PRO/MICRO SD
Electronics DYNEX COMPACT MEMORY CARD READER MMC/SD/SDHC/SDXC/MS PRO/MICRO SD
US $2.99
Blue SD SDHC MMC T-Flash M2 MS USB Memory Card Reader
Blue SD SDHC MMC T-Flash M2 MS USB Memory Card Reader
US $7.43
3x New USB 2.0 SDHC/SD/MMC/RS-MMC Memory Card Reader for 1GB 2GB 4GB 8GB
3x New USB 2.0 SDHC/SD/MMC/RS-MMC Memory Card Reader for 1GB 2GB 4GB 8GB
US $.01
Universal memory card Reader SD/SDHC/microSD/TF/MMC/MS
Universal memory card Reader SD/SDHC/microSD/TF/MMC/MS
US $2.21
1080P USB HDMI HDTV RMVB Multi Media Player MP3 SD MMC SDHC MKV MP4 MPEG JPG AVI
1080P USB HDMI HDTV RMVB Multi Media Player MP3 SD MMC SDHC MKV MP4 MPEG JPG AVI
US $45.99
4 in 1 USB SDHC SD MMC T-flash TF MS M2 Memory Card Reader Adapter Orange
4 in 1 USB SDHC SD MMC T-flash TF MS M2 Memory Card Reader Adapter Orange
US $.69
Cyan Green Plastic USB 2.0 T-Flash TF MMC SD SDHC Memory Card Reader Writer
Cyan Green Plastic USB 2.0 T-Flash TF MMC SD SDHC Memory Card Reader Writer
US $4.55
High Speed USB 2.0 Memory Card Reader All in one for SDHC TF Micro SD MMC MS RS
High Speed USB 2.0 Memory Card Reader All in one for SDHC TF Micro SD MMC MS RS
US $.55
4 in 1 USB SDHC SD MMC T-flash TF MS M2 Memory Card Reader Adapter Red
4 in 1 USB SDHC SD MMC T-flash TF MS M2 Memory Card Reader Adapter Red
US $.69
Camera Shape MS Duo SD MMC SDHC TF Card Reader Maya Blue
Camera Shape MS Duo SD MMC SDHC TF Card Reader Maya Blue
US $4.40
EXTERNAL USB 2.0 MEMORY CARD READER WRITER CF SDHC MMC XD MS MICRO MINI
EXTERNAL USB 2.0 MEMORY CARD READER WRITER CF SDHC MMC XD MS MICRO MINI
US $4.90
New USB 2.0 SD/SDHC/TF/MMC High-Speed Multi In 1 Memory Card Reader
New USB 2.0 SD/SDHC/TF/MMC High-Speed Multi In 1 Memory Card Reader
US $.01
High Speed All-in-1 Card Reader SD/XD/MMC/MS/SDHC
High Speed All-in-1 Card Reader SD/XD/MMC/MS/SDHC
US $8.98
USB 2.0 Plastic Micro SD Trans Flash MMC SDHC Card Reader Writer Cyan Green
USB 2.0 Plastic Micro SD Trans Flash MMC SDHC Card Reader Writer Cyan Green
US $4.16
23-in-1 USB 2.0 Memory Card Reader SD SDHC MS CF MMC XD USB6
23-in-1 USB 2.0 Memory Card Reader SD SDHC MS CF MMC XD USB6
US $.01
DYNEX MINI MEMORY CARD READER/WRITER SD/SDHC/RS-MMC/MINISD/M2/MICRO SD/RS-MMC
DYNEX MINI MEMORY CARD READER/WRITER SD/SDHC/RS-MMC/MINISD/M2/MICRO SD/RS-MMC
US $1.99
1080P USB 2.0 HDMI HD RMVB Multi Media Player MP3 SD MMC SDHC MKV MP4 MPEG AVI
1080P USB 2.0 HDMI HD RMVB Multi Media Player MP3 SD MMC SDHC MKV MP4 MPEG AVI
US $45.99
BLUETOOTH CAR KIT SPEAKER HANDSFREE HANDS FREE FM TRANSMITTER SD SDHC MMC
BLUETOOTH CAR KIT SPEAKER HANDSFREE HANDS FREE FM TRANSMITTER SD SDHC MMC
US $13.99
Intenso 3914800 8 inch PhotoBase Digital Photo Frame USB SD SDHC MMC MS
Intenso 3914800 8 inch PhotoBase Digital Photo Frame USB SD SDHC MMC MS
US $71.84
USB Memory Card Reader 4 slots for SD Micro SD MMC SDHC DV TF M2 MS Memory Stick
USB Memory Card Reader 4 slots for SD Micro SD MMC SDHC DV TF M2 MS Memory Stick
US $.99
USB 2.0 SDHC MMC MEMORY CARD READER WRITER - car black box dash camera accessory
USB 2.0 SDHC MMC MEMORY CARD READER WRITER - car black box dash camera accessory
US $6.95
New 3.5
New 3.5" USB 2.0 Flash Memory Internal PC Computer Card Reader SD SDHC MMC Micro
US $2.50
SDHC/SD/MMC Memory Card Reader To USB 2.0 Adapter For Windows XP/Vista
SDHC/SD/MMC Memory Card Reader To USB 2.0 Adapter For Windows XP/Vista
US $3.77
USB 2.0 MEMORY CARD READER FOR SD MICRO SDHC MMC M2 TF
USB 2.0 MEMORY CARD READER FOR SD MICRO SDHC MMC M2 TF
US $.99
SUNPAK SD SDHC MMC CARD READER EASY TO USE BRAND NEW + FAST SHIPPING
SUNPAK SD SDHC MMC CARD READER EASY TO USE BRAND NEW + FAST SHIPPING
US $.99
USB 2.0 Card Reader SD/TF/MS/M2 SDHC SD MMC RS-MMC 2GB 4GB 8GB
USB 2.0 Card Reader SD/TF/MS/M2 SDHC SD MMC RS-MMC 2GB 4GB 8GB
US $.90
4 in 1 USB SDHC SD MMC T-flash TF MS M2 Memory Card Reader Adapter Black
4 in 1 USB SDHC SD MMC T-flash TF MS M2 Memory Card Reader Adapter Black
US $.69
New Mini USB 2.0 MMC SD SDHC Memory Card Writer/Reader
New Mini USB 2.0 MMC SD SDHC Memory Card Writer/Reader
US $2.99
5+1 iPad 1 2 3 Camera Kit USB Keyboard Card SD/HC MS Duo MMC M2 T-Flash Kit
5+1 iPad 1 2 3 Camera Kit USB Keyboard Card SD/HC MS Duo MMC M2 T-Flash Kit
US $7.86
High Speed All in 1 USB 2.0 Memory Card Reader for SDHC TF Micro SD MMC MS Blue
High Speed All in 1 USB 2.0 Memory Card Reader for SDHC TF Micro SD MMC MS Blue
US $.65
High Speed All in 1 USB 2.0 Memory Card Reader for SDHC TF Micro SD MMC MS Green
High Speed All in 1 USB 2.0 Memory Card Reader for SDHC TF Micro SD MMC MS Green
US $.44
High Speed All in 1 USB 2.0 Memory Card Reader for SDHC TF Micro SD MMC Yellow
High Speed All in 1 USB 2.0 Memory Card Reader for SDHC TF Micro SD MMC Yellow
US $.75
SDHC MMC SD to 2.5 44 Pin IDE Male Converter Adapter
SDHC MMC SD to 2.5 44 Pin IDE Male Converter Adapter
US $8.06
New Blue USB2.0 SD SDHC MMC Memory Card Reader 1~32GB
New Blue USB2.0 SD SDHC MMC Memory Card Reader 1~32GB
US $.72
3pcs SDHC SD MMC Memory Card Reader To USB 2.0 Adapter For PC Laptop
3pcs SDHC SD MMC Memory Card Reader To USB 2.0 Adapter For PC Laptop
US $6.09
3PCS New USB 2.0 SD/SDHC/TF/MMC High-Speed Multi In 1 Memory Card Reader
3PCS New USB 2.0 SD/SDHC/TF/MMC High-Speed Multi In 1 Memory Card Reader
US $6.09
3PCS High Speed USB 2.0 Multi in 1 Memory Multi-Card Reader SDHC MMC/SD/TF
3PCS High Speed USB 2.0 Multi in 1 Memory Multi-Card Reader SDHC MMC/SD/TF
US $6.09
SDHC/SD/MMC USB 2.0 Memory Card Reader Plug Directly to USB Port for 2GB 4GB 8GB
SDHC/SD/MMC USB 2.0 Memory Card Reader Plug Directly to USB Port for 2GB 4GB 8GB
US $2.79
2PCS High Speed USB 2.0 Multi in 1 Memory Multi-Card Reader SDHC MMC/SD/TF
2PCS High Speed USB 2.0 Multi in 1 Memory Multi-Card Reader SDHC MMC/SD/TF
US $4.18
2x New USB 2.0 SD/SDHC/TF/MMC High-Speed Multi In 1 Memory Card Reader
2x New USB 2.0 SD/SDHC/TF/MMC High-Speed Multi In 1 Memory Card Reader
US $4.18
2x High Speed USB 2.0 Multi in 1 Memory Multi-Card Reader SDHC MMC/SD/TF
2x High Speed USB 2.0 Multi in 1 Memory Multi-Card Reader SDHC MMC/SD/TF
US $4.18
5x High Speed USB 2.0 Multi in 1 Memory Multi-Card Reader SDHC MMC/SD/TF
5x High Speed USB 2.0 Multi in 1 Memory Multi-Card Reader SDHC MMC/SD/TF
US $9.89
SD SDHC MMC Memory Card Reader USB 2.0 Adapter SDHC
SD SDHC MMC Memory Card Reader USB 2.0 Adapter SDHC
US $1.49
New USB 2.0 Micro SD HC MMC TF MS Memory Stick Duo Pro Card Reader White
New USB 2.0 Micro SD HC MMC TF MS Memory Stick Duo Pro Card Reader White
US $.99
BRAND NEW USB 2.0 SDHC SD MMC High Speed Memory Card Reader
BRAND NEW USB 2.0 SDHC SD MMC High Speed Memory Card Reader
US $.99
USB 2.0 all in one Memory Multi Card Reader MINI SD SDHC MS CF MMC XD TF M2 NEW
USB 2.0 all in one Memory Multi Card Reader MINI SD SDHC MS CF MMC XD TF M2 NEW
US $2.24
T-Flash SD MMC M2 MS SDHC Memory Card Reader Clear Blue
T-Flash SD MMC M2 MS SDHC Memory Card Reader Clear Blue
US $4.00
All in 1 USB Memory Card Reader CF SD XD MMC MS TF SDHC
All in 1 USB Memory Card Reader CF SD XD MMC MS TF SDHC
US $3.49
SDHC SD MMC Memory Card Reader To USB 2.0 Adapter For PC Laptop
SDHC SD MMC Memory Card Reader To USB 2.0 Adapter For PC Laptop
US $.01
Blue High Speed All in 1 USB 2.0 Memory Card Reader for SDHC TF Micro SD MMC MS
Blue High Speed All in 1 USB 2.0 Memory Card Reader for SDHC TF Micro SD MMC MS
US $.31
Green High Speed All in 1 USB 2.0 Memory Card Reader for SDHC TF Micro SD MMC MS
Green High Speed All in 1 USB 2.0 Memory Card Reader for SDHC TF Micro SD MMC MS
US $.85
Yellow  High Speed All in 1 USB 2.0 Memory Card Reader for SDHC TF Micro SD MMC
Yellow High Speed All in 1 USB 2.0 Memory Card Reader for SDHC TF Micro SD MMC
US $.22
Grey High Speed All in 1 USB 2.0 Memory Card Reader for SDHC TF Micro SD MMC MS
Grey High Speed All in 1 USB 2.0 Memory Card Reader for SDHC TF Micro SD MMC MS
US $.21
New SD/SDHC/MMC to High-Speed Extreme CF Type II Memory Card Reader Adapter
New SD/SDHC/MMC to High-Speed Extreme CF Type II Memory Card Reader Adapter
US $17.32
New USB 2.0 SD SDHC/ MMC / RS-MMC Card Reader For 2GB 4GB 8GB black
New USB 2.0 SD SDHC/ MMC / RS-MMC Card Reader For 2GB 4GB 8GB black
US $.99
All in1 USB 2.0 Memory Card Reader SDHC SD MMC TF MS M2
All in1 USB 2.0 Memory Card Reader SDHC SD MMC TF MS M2
US $1.99
All in One USB 2.0 Card Reader CF SD XD MMC MS TF SDHC
All in One USB 2.0 Card Reader CF SD XD MMC MS TF SDHC
US $3.56
Digital Concepts CR-35S USB 2.0 SD/SDHC/MMC Card Reader
Digital Concepts CR-35S USB 2.0 SD/SDHC/MMC Card Reader
US $3.99
Sylvania HD1Z SD/SDHC/MMC 720p HD Pocket Video Digital
Sylvania HD1Z SD/SDHC/MMC 720p HD Pocket Video Digital
US $48.99
USB 2.0 Micro SD HC MMC TF MS Memory Stick Duo Pro Card Reader
USB 2.0 Micro SD HC MMC TF MS Memory Stick Duo Pro Card Reader
US $.99
16 32 GB micro SD micro SDHC RS-MMC TF MS Pro Duo M2 USB Card Reader Writer MTBK
16 32 GB micro SD micro SDHC RS-MMC TF MS Pro Duo M2 USB Card Reader Writer MTBK
US $5.99
SD SDHC MMC MEMORY CARD READER USB 2.0 For Memory Card
SD SDHC MMC MEMORY CARD READER USB 2.0 For Memory Card
US $1.42
10 PCS SDHC / SD / MMC Memory Card Reader to USB 2.0 Adapter
10 PCS SDHC / SD / MMC Memory Card Reader to USB 2.0 Adapter
US $24.99
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8-Pack Long-Lasting 2200mAh HYBRID AA Ni-MH Rechargeable Batteries w/ Latest Hybrid Technology


8-Pack Long-Lasting 2200mAh HYBRID AA Ni-MH Rechargeable Batteries w/ Latest Hybrid Technology


$18.99


Why Accessory Power's truCELL AA NiMH Precharged Rechargeable Batteries?Accessory Power's truCELL Rechargeable Batteries can replace your drawerful of those expensive and disposable single-use Batteries.truCELL Rechargeables are made with Top-of-the-Line Materials and are economical, reuseable, and an Eco-friendly replacement to either your throw-away alkalines or for underperforming rechargeables...

PS3 3-Port USB Hub Controller Expander with SD Card Reader


PS3 3-Port USB Hub Controller Expander with SD Card Reader


$6.90


Connect up to three additional controllers or other USB devices with the PS3 USB Hub by Hyperkin. Its built-in memory slot accepts SD cards, SDHC cards, MMC cards and Memory Sticks. The PS3 USB Hub is also compatible with PCs.Features include: •Compatible with PS3 and PC•Hub provides three additional USB ports•Built in memory card a lot accepts SD Cards, SDHC cards, MMC cards and Me...

HUBSTATION FOR PLAYSTATION 3 SLIM, PS3 FAT & PC


HUBSTATION FOR PLAYSTATION 3 SLIM, PS3 FAT & PC


$9.99


USB HUB and MEDIA CARD READER with 6 foot USB Extension cable....

Dell Inspiron i1764 17.3-Inch Laptop (Obsidian Black) - i5-430 2.26GHz Intel CPU; 8GB Memory; 500GB HD; DVD/CD±R/RW; Windows 7 Home Premium, Wireless


Dell Inspiron i1764 17.3-Inch Laptop (Obsidian Black) - i5-430 2.26GHz Intel CPU; 8GB Memory; 500GB HD; DVD/CD±R/RW; Windows 7 Home Premium, Wireless


$1,249.89


Stay connected wherever you roam with the Dell Inspiron 1764 laptop in black, which features a bright, vivid 17.3-inch LCD screen and long-lasting 6-cell battery. Weighing just under 7 pounds, it's a great choice for both work and play with the screen's high-definition resolution and included DVD drive (which can also burn dual-layer DVD and CD media). And with the included HDMI port, you can conn...

Dell Studio XPS 15 Laptop, Intel i5-2430M 2.40 GHz, 6GB Memory, 15.6in HD Screen, NVIDIA GT525M 1GB, 750GB HD, CD/DVD Burner, Windows 7 Professional


Dell Studio XPS 15 Laptop, Intel i5-2430M 2.40 GHz, 6GB Memory, 15.6in HD Screen, NVIDIA GT525M 1GB, 750GB HD, CD/DVD Burner, Windows 7 Professional


$1,000.00


1 Year Limited Warranty, Movies, games, music and Web chat come to life with leading-edge graphics, high-definition (HD) video chat and sound that can fill a room. XPS 15 laptops come with built-in wireless display technology to see content from your laptop on your HDTV. Powerful graphics. Powerfully smart. The XPSTM 15 laptop has what it takes to take you to new levels of performance. Its top-of-...

 10-In-1 USB 2.0 High Speed Memory Card Reader Writer for Sd Sdhc Minisd Minisdhc Mmc Rsmmc - Smoke


10-In-1 USB 2.0 High Speed Memory Card Reader Writer for Sd Sdhc Minisd Minisdhc Mmc Rsmmc - Smoke


$3.27


Suggested Applications:Secure Digital, SD / SD Ultra, MiniSD (with adapter), MicroSD / TransFlash (with adapter), MMC, RS-MMC (with adapter), MMC Plus, MMC Mobile (with adapter), MMC Micro (with adapter).

 1080p HD High Definition Media Player X9


1080p HD High Definition Media Player X9


$168.39


Play media from your home network, stream Internet content, plus, access your Netflix unlimited membership. Experience it all on your TV in Full-HD Plus HD media player.HD Media Player supports 720P, 1080I, 1080P(1920 * 1080), H. 264(MKV, MOV, AVI) VC1(WMV) MPEG1/2/4- SP/ASP/DivX 3.x/RM/RMVB/FLV etc video formats. High Definition Media Player supports HDMI 1.3, AV composite video/audio output, RJ-45 net port, internal WIFI output port. HD Media Player supports internal 2.5 hard disk, U flash disk, Mobile HDD, SD/SDHC/MMC etc storage equipment. HD Media Player supports Television networks, fast web browsing, variety, games etc function. High Definition Media Player supports above 720P HD sources online demand.The best HD media player is exceptionally easy to use so anyone in the family can do it and, because it's networked, you can easily access media from any PC in the home.

 15 MEGA PIXELS DIGITAL CAMERA DV7200A Green


15 MEGA PIXELS DIGITAL CAMERA DV7200A Green


$62.99


 Specifications:Photosensitive IC: 5-Mega pixel CMOS digital cameraFile format: Static JPEG dynamic AVIResolution ratio (static): 3000*4000 (12MP interpolation)                           2592*1944 5MP                           2048*1536 3MP                           1024*768 1MPResolution ratio (dynamic): 1280*720                            640*480                            320*240Audio: Microphone, loudspeakerDisplay: 2.0"TFT LCDPower: 3.7V Li-ion BatteryInterface: USB 2.0 high speed           Support PCCAM and removable diskExternal memory: cardRemovable safe digital memory (SD SDHC max 8G)TV output: SupportFlash light:: LEDZoom: 4*digital zoomDimension: 120*52*22mmThis unit can not only be used to shoot photos, but also be provided with built-in PC camera functions. To shoot photos, this unit needs to be provided with external SD or MMC cards (32MB-8GB); the only thing you need to do is to connect the unit to the computer with USB line and an icon for movable hard disc will be shown on the screen; then, you can copy the photos to the computer directly. If you use the built-in PC camera functions, you can carry out video chatting with others through the Internet.

 2.0 inch LTPS TFT LCD 4X digital zoom 1280x720P video recording Camera


2.0 inch LTPS TFT LCD 4X digital zoom 1280x720P video recording Camera


$99.99


Feature1280x720P video recording 12MP photo-taking 4X digital zoom HDMI / AV output 2.0 inch LTPS TFT LCD Real time stamp Maximum 32GB SD card expansion 1000mAh rechargeable Li-ion battery Adsorb onto your windshield of vehicle Specification Primary function: HD Vehicle DVR Screen: 2.0 inch LTPS TFT LCD Image Sensor: 5 mega pixels CMOS Pixels: 12 mega pixels Lens: 7.0mm Format- Picture Format: JPEG- Video Format: AVI Focus Range: 10cm-infinity Video Output- HDMI: CTS1.2 compliant- 720P output mode- Composite: NTSC Still Image- Resolution: 4000x3000- Maximum Output Picture Element: 5M, 8M, 12M Recording Resolution- WXGA: 1280x720 pixels@30fps- VGA: 640x480 pixels@30fps Memory: support SDHC/MMC card up to 32GB Zoom: 4X digital zoom Shutter: Electronic shutter Shutter Speed: 1/2 – 1/1000 second White Balance: Auto, Sunny, Cloudy, Tungsten, Fluorescent LED Light: Auto, LED On, LED Off Ports & Buttons- HDMI out port- Mini USB port- AV port- Power On/Off button- Menu button- Mode button- Play button Language: English, French, Deutsch, Italian, Spanish, Portuguese, Traditional Chinese, Simplified Chinese, Japanese, Russian Battery- Type: Rechargeable lithium battery- Capacity: 1000mAh- Voltage: 3.7V Working Temperature: -10 - 60 Celsius degrees Working Humidity: 10%-80% Dimension: 100x50x30 mm Weight: 67g Color: Black  

 2.5 / 3.5 SATA HDD Docking Station Media Player


2.5 / 3.5 SATA HDD Docking Station Media Player


$208.49


This HD multi-media player can read the storage device that are connected to the USB/SD/SDHC/MMC/MS /MS PRO interfaces and play the multimedia. It supports the formats such as MP3, JPEG, BMP, PNG, MOV, RM, RMVB, MPEG1/2/4 and DAT.

SDHC SD MMC TF memory card USB 2.0 reader Green


SDHC SD MMC TF memory card USB 2.0 reader Green


$1.99


SDHC SD MMC TF memory card USB 2.0 reader Green

Transcend Secure Digital High Capacity (SDHC), Secure Digital (SD) Card, MultiMediaCard (MMC), MMCplus, MMCmobile, RS-MMC, micr


Transcend Secure Digital High Capacity (SDHC), Secure Digital (SD) Card, MultiMediaCard (MMC), MMCplus, MMCmobile, RS-MMC, micr


$11.67


Transcend Secure Digital High Capacity (SDHC), Secure Digital (SD) Card, MultiMediaCard (MMC), MMCplus, MMCmobile, RS-MMC, micr

Verbatim MMCplus, RS-MMC, MultiMediaCard (MMC), Secure Digital (SD) Card, Secure Digital High Capacity (SDHC) - USB 96508


Verbatim MMCplus, RS-MMC, MultiMediaCard (MMC), Secure Digital (SD) Card, Secure Digital High Capacity (SDHC) - USB 96508


$26.13


Verbatim MMCplus, RS-MMC, MultiMediaCard (MMC), Secure Digital (SD) Card, Secure Digital High Capacity (SDHC) - USB 96508

10-In-1 USB 2.0 High Speed Black Memory Card Reader Writer For SD SDHC Minisd MiniSDHC MMC RSMMC


10-In-1 USB 2.0 High Speed Black Memory Card Reader Writer For SD SDHC Minisd MiniSDHC MMC RSMMC


$12


10-In-1 USB 2.0 High Speed Black Memory Card Reader Writer For SD SDHC Minisd MiniSDHC MMC RSMMC

24 In 1 multifuntion ExpressCard/34 Reader For Sd SDHC MMC SM XD Laptop MAC


24 In 1 multifuntion ExpressCard/34 Reader For Sd SDHC MMC SM XD Laptop MAC


$18


12 In 1 ExpressCard/34 Express Card Reader For Sd SDHC MMC SM XD Laptop MAC provides ports for 12 in 1 Card reader

What is the technology difference between different types of Memory cards ( like SD/MMC/SDHC/MS/MSPRO)?

What different type of memory cards available in the market ( like SD/MMC/SDHC/MS/MS PRO/ ) and what is the technology / construction differences between them.

Fundamentally, they all work the same way. The differences are in physical form and electrical interface.

There is USB, for completeness.

Compact Flash, with an interface related to PCMCIA and IDE.
Types I, II, and III relate to physical thickness of the device.
There are some Hard Drives in the CF form factor.

SD comes in full sized and mini/micro form factors (you can get adapters to use the smaller ones in devices/readers for the bigger ones). Its precursor was MMC, which most readers are backwards compatible with, except those that require secure features of SD. SDHC is a high capacity/speed extension of SD.

MMC is basically the raw NAND Flash chips (which most other cards use, along with an interface chip) used on a card.
XD is a miniature version of MMC, also with high capacity addressing capability.

I don't know much about MS, except the various sub-formats probably allow for higher capacity, security, or miniature form factor, and they are Sony's.

8GB SDHC MMC Memory Card Reader by Eforcity


Mmc Sdhc Items Recently Sold:

8GB MMC SD SDHC Memory Card Reader to USB 2.0 Adapter, New USB 2.0 All-in-one Memory Card Reader TF/SD/MMC/SD-HC/MS/M2 , Remote Controller Car 1.8 LCD Monitor MP3 Player USB SD HC MMC Radio Transmitter, MP3 WMA 12V Car Wireless FM Transmitter USB SD SDHC MMC Card Slot Reader Player, M2 MS TF SD HC MMC Slot Flash Drive Card Reader USB 6 Port Hub Laptop PC Adapter, In Car USB Multi Media Player SD SDHC MMC Memory Flash Card Slot FM Transmitter, ALL-IN-ONE CARD READER USB 2.0 SD/MMC/CF/MS/SDHC/XD/M2, Fast USB 2.0 Multi 4 Slot Card Reader For Mini Micro SD SDHC MMC M2 Flash Drive, Car Music MP3 Player Wireless FM Radio Transmitter SD SDHC MMC Card Slot Reader, Car Flash Card multi Media Player SDHC MMC USB Memory Slot FM Radio Transmitter, Car Controller+ Bluetooth MP3 Music Player Kit USB SD SDHC MMC FM Transmitter, Car Automobile MP3 Music Player Kit USB SD SDHC MMC FM Transmitter + Controller, All in 1 USB V2.0 Multi Memory Card Reader Writer For Mini SD MMC MS CF SDHC XD, SD SDHC MMC to 2.5'' 44 Pin IDE Male Adapter Converter, 23-in-1 USB 2.0 Memory Card Reader SD SDHC MS CF MMC XD USB6, Secure Digital SD SDHC MMC to IDE 3.5 Female Adapter, USB 2.0 MEMORY CARD READER FOR SD MICRO SDHC MMC M2 TF, New MMC SD SDHC MEMORY CARD READER fit 4G 8GB 16GB 32GB, Secure Digital SD SDHC MMC to IDE 3.5 40 Pin Adapter, USB 2.0 Micro SD HC MMC TF MS Memory Stick Duo Pro Card Reader, New USB 2.0 SD SDHC/ MMC / RS-MMC Card Reader For 2GB 4GB 8GB black, 4 in 1 USB SDHC SD MMC T-flash TF MS M2 Memory Card Reader Adapter Red, SDHC SD MMC Memory Card Reader To USB 2.0 Adapter For PC Laptop, 4 in 1 USB SDHC SD MMC T-flash TF MS M2 Memory Card Reader Adapter Orange, BRAND NEW USB 2.0 SDHC SD MMC High Speed Memory Card Reader, New USB 2.0 Micro SD HC MMC TF MS Memory Stick Duo Pro Card Reader White, 4 in 1 USB SDHC SD MMC T-flash TF MS M2 Memory Card Reader Adapter Black, High Speed 4 in 1 USB 2.0 Memory Card Reader for SDHC TF Micro SD MMC MS , 3x New USB 2.0 SDHC/SD/MMC/RS-MMC Memory Card Reader for 1GB 2GB 4GB 8GB, USB Memory Card Reader 4 slots for SD Micro SD MMC SDHC DV TF M2 MS Memory Stick, GREEN MINI USB 2.0 T-Flash MMC MICRO SDHC MS Duo SD MS SDHC CARD READER SY-568, SD SDHC MMC to 2.5 44 Pin IDE Male Adapter Converter, New USB 2.0 SDHC SD MMC High Speed Memory Card Reader, BLUETOOTH CAR KIT SPEAKER HANDSFREE HANDS FREE FM TRANSMITTER SD SDHC MMC, 1080P USB 2.0 HDMI HD RMVB Multi Media Player MP3 SD MMC SDHC MKV MP4 MPEG AVI, New USB 2.0 SD/SDHC/TF/MMC High-Speed Multi In 1 Memory Card Reader , EXTERNAL USB 2.0 MEMORY CARD READER WRITER CF SDHC MMC XD MS MICRO MINI, Electronics DYNEX MINI MEMORY CARD READER/WRITER SD SDHC RS MMC MINI SD M2 MICRO, New All-In-One USB 2.0 Flash Memory Card Reader/Writer For CF/XD/SD/MS/SDHC/MMC, High Speed USB 2.0 Memory Card Reader All in one for SDHC TF Micro SD MMC MS RS ,
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