Features: Holds 2 cards for super large capacity: Get maximum storage capacity with 2 microSDHC or 2 microSD cards. CR-5400 converts 2 microSD(HC) cards into one MS Pro for Duo stick. You can get twice the capacity at a lower price. Card types can be mixed: Cards of different capacity and different type can be used concurrently. Freedom of expansion and upgrade: The adapter works with only one microSDHC card as well. The second slot can be equipped anytime later. You can exchange the cards and upgrade the max. capacity at will. Super high read/write speeds of 10MB/s and up: CR-5400 is made of high quality components and preserves the original speed of the inserted microsd(HC) cards(when two different types of microSD(HC) cards are used, the slower card sets the speed rate) Supports 2 microSD/microSDHC cards: 2 microSD(HC) cards of different capacity can be used. Specification: Model : CR-5400 OS : for Windows Vista XP,2000.Me,98SE,for Mac OS 9.2,for Mac OS X,linux Support : Micro SD 256MB - 2GB / Micro SDHC 4GB -16GB Speed : Super high read/write speed of 10 MB/s and up Dimension: approx. 30x20x1mm/1.18x0.78x0.03'' Color : White Note: Suit For most of the Cameras for Sony,not all for sony camera. Data Transfer can only be done with micro SD HC cards inserted in CR-5400. Direct PC to micro SDHC card data transfer and then inserting in CR-5400 won not work. Re-using your micro SDHC cards for other devices than CR-5400. Should you experience formatting problems (i.e. only half of the original capacity available), please format concerned micro SDHC card(s) in slot#1 of CR- 5400 (slot#2 must be empty). Do this for every affected card. Now you can re-use your micro SDHC card(s) in other devices. Note: Size for manual measurement, there may be a 0 to 2 for cm error, belongs to the normal phenomenon. And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: (Without retail package) 1 x Micro SD TF to Memory Stick MS Pro for Duo for PSP Card Dual 2 Slot Adapter