Kingston MobileLite G4 USB 3.0 Card Reader Review

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Kingston MobileLite G4 UHS-II SD Card Reader

Are you looking for a new USB 3.0 card reader for your SD and microSD memory cards? The Kingston MobileLite G4 is newest portable memory card ready by Kingston Digital and might be just what you are looking for. The Kingston MobileLite G4 ( FCR-MLG2 ) is versatile device as it has both SD and microSD memory card slots. This means that it can read SD, SDHC, SDXC and microSD/SDHC/SDXC cards and it even supports the latest card speeds, UHS-I and UHS-II. The previous generation MobileLite G3 reader sort of worked with the latest UHS-II cards, but if it worked the transfer speeds were severely crippled in our experience. It was clearly time for Kingston to update the MobileLite G3 as the World’s largest privately owned memory company needs to have a card reader that accepts the latest standards.

Kingston MobileLite G4 FCR-MLG4


Kingston MobileLite G4 Specifications & Features: 

  • Part Number: FCR-MLG2
  • Dimensions: 52mm x 33mm x 9mm
  • Operating Temperature: 0°C to 60°C
  • Storage Temperatures: -20°C to 70°C
  • Reads SD, SDHC, SDXC, UHS-II and microSD/SDHC/SDXC, UHS-I and supports the latest card speeds
  • Compliant with:  USB 3.0 specification & SDA 4.20 standard
  • Compatible with: Windows 8.1, Windows 8, Windows 8 RT, Windows 7 (SP1), Windows Vista (SP1, SP2), Mac OS X v.10.6.x+, Linux v.2.6.x+
  • Warranty: 2 years w/ free technical support


Kingston Digital MobileLite G4 microSD

The Kingston MobileLite G4 has a sleek design that is just 9mm thick to minimize USB port blockage and to ensure that it easily fits in your pocket or wherever you want it to go. On the back of the drive you have a microSD slot on one side.

Kingston Digital MobileLite G4 microSD

On the other side of the MobileLite G4 you’ll discover the standard sized SD, SDHC and SDXC slot.

Kingston Digital MobileLite G4 Card Slots

Here it a look down at the top memory card slot end of the MobileLite G4 card reader. You can make out the larger slot on the top with the smaller MicroSD card slot on the bottom.  The two holes on the bottom of the drive exit on the sides and are connection holes for those that want to use a lanyard.

Kingston MobileLite G4 Card Reader

The Kingston MobileLite G4 fully supports the SuperSpeed USB 3.0 specification and can be used on USB 3.0 ports to get the very best transfer times. It is also backwards compatible with USB 2.0 ports to allow owners the ability to use this card reader on pretty much every PC out there that has an open USB port.

SD Card Readers

Kingston’s MobileLite G4 multi-function card reader is roughly 20 percent smaller than the previous generation MobileLite G3 reader seen in the image above. This means that it more easily into a pocket, purse or camera bag and more importantly it won’t as badly block the USB ports next to it as bad when used on a desktop PC. Also note that Kingston went away from an entirely plastic enclosure on the MobileLite G3 with ends that had to be opened and closed to a mostly metallic form factor that has no sliding doors or covers that need to be messed with. Up top we have the SanDisk Extreme Pro UHS-II SD Reader/Writer (part number SDDR-329) that works with just SD cards and retails for right around $42.00 shipped. The Kingston MobileLite G4 runs just $10.36 shipped and just happens to have a microSD slot and be thinner. Let’s take a look at the performance of the MobileLite G4 to see how it perfoms with the fastest UHS-II SD card that we have on hand!

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  • Anna Nelson

    SD cards are necessity of time and know the pulse of marketing. In virtual media SD Card Duplicators has supply us many alternatives to be with the time.



    Thanks for the topic and the different tests.
    When making some research on google I found many tests of the Kingston MobileLight G4 but only with SD UHS-II cards, have you the possibility to tell if it’s the same with an MicroSD UHS-II card ?

    I’ve tried with an MicroSD LEXAR 1000x 128GB and I couldn’t get more than 95MB/s on read speed and 45MB/s on write speed.


  • CynthiaSion0

    Does this Kinston Reader can be easily used
    on different computer or laptops? Honestly, I do have an old memory card adapter
    that has been used for months. But, it was broken for mistaken falling
    yesterday. So, perhaps this one could be my choices. Recently, I just have to
    simply use my flash drive to instead these memory cards to transfer something
    useful. Read more information here: