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US Robotics > 
Item#: 9SIA0ZX2C35780

US Robotics USR8420 All-in-one USB 3.0 Card Reader/Writer with Dual SD Slots

  • All-in-one
  • USB 3.0
  • Slots 5
  • External

  • Pin It
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  • Specifications
  • Warranty & Returns
  • Reviews

Learn more about the US Robotics USR8420


US Robotics


Installation Type
USB 3.0
Supports CompactFlash I, SD Series, SDHC Series, SDXC Series, T-Flash, MultiMediaCard, MMCplus, MMCmobile, RS-MMC, RS-MMC Dual Voltage, MMCmicro, Memory Stick, Memory Stick Duo, Memory Stick Micro, Memory Stick PRO Series, Memory Stick XC Series, SmartMedia, Microdrive

Support for CF cards with PIO and UDMA including modes 6 and 7

Support for SD cards with UHS

* Adapters are needed for mini and micro cards.
Support - Compact Flash
Support - Memory Stick
Support - MMC
Support - SD
Support - SmartMedia


Super Speed transfer rates up to 5 Gbps

Backwards compatible with USB 2.0 and 1.1 ports

Surpasses USB 2.0 read speed limitations allowing latest high speed memory cards full read speeds

Plug & Play

Hot Swappable

No driver installation required for Windows, Macintosh, or Linux

USB Cable can easily be removed for easy storage or portability

Power and status LEDs

* USB 3.0 super speeds are achieved when used with USB 3.0 compatible devices and cables. Actual speeds may vary based on card and host system.
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Customer Reviews of the US Robotics USR8420

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  • Mark W.
  • 8/10/2012 7:43:24 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsWhat I was looking for

Pros: Small compact unit, Plug & play. It doesn't get any easier. It can be taken anywhere you might need to use it. Your not stuck with it installed in your system.

Cons: The cable should be longer. I' going to look on their site to see if a longer one is available.

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Item#: 9SIA0ZX2C35780
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