KINGMAX, a manufacturer of flash-based storage, announced that it has released a new PRO Extreme line of SDXC / SDHC SD memory cards. The new Pro Extreme line adheres to UHS-I Speed Class 3 specifications ensuring that users get the fastest experience possible when used in compatible devices. KINGMAX says that the UHS-I rating allows the card to transfer images from the users camera’s image buffer to the SD card much faster than non UHS cards.