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What is UHS-1? Fastest type of SD cards!

For professionals, memory cards are never fast enough. Now we have new options: SDHC UHS-1 and SDXC UHS-1 memory cards.
UHS stands for Ultra High Speed. The symbol can be found exclusively on SDXC and SDHC products. UHS-I is the fastest category of card available today with a bus interface speed of up to 104 MB/s, while UHS-II is expected to reach 300 MB/s. SDXC UHS-I and SDHC UHS-I memory cards can achieve best performance when paired with a UHS-I device and are designed to allow consumers to record HD resolution videos, plus perform other simultaneous recording functions.
Compared with SDHC Class 10 cards, the next-generation SDHC UHS-1 cards provide much better data transfer performance, as shown in the following graphs:
Understanding Symbols
The SD Association has announced two new high-speed performance symbols for the fastest SDXC and SDHC devices and memory cards:
★    The UHS-I symbol (a bold capital letter I): for products with bus interface speeds up to 104 MB/s
★    The UHS Speed Class 1 symbol (a number 1 nestled inside a letter U): meaning it supports transfers of at least 10MB/s
# SDHC UHS-1 Cards
# SDXC UHS-1 Cards
To get the full potential of UHS-1 cards….
Does purchasing a SDHC/SDXC UHS-1 card mean you can immediately start enjoying the performance benefits offered by the new standard? The answer is: not necessarily. Unless your card reader supports SDHC/SDXC UHS-1 format, your ultra high speeds card will never reach its ultimate speed potential.  
Let’s see the following charts. Using a 8GB SDHC UHS-1 memory card with a card reader that supports UHS-1 (right) is obviously faster than using it with the one that doesn’t (left).
If you are a laptop user, try to use your SDHC/SDXC UHS-1 card with our RDF1 ExpressCard Reader. It accepts three next-generation card formats: SDHC, SDHC UHS-1, SDXC, and SDXC UHS-1. Thanks to its lightning-fast connectivity, transferring large files like RAW digital images and high-definition videos is much easier than you think!
If you are a PC user, our RDF8 USB 3.0 multi card reader will be a good choice. ItIt supports all new card formats including SDHC UHS-1, SDXC UHS-1, UDMA6/UDMA7 CF and MSXC cards. Backwards compatible with USB2.0, the RDF8 is the ideal companion for your present and future data management needs.

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