StarTech 2-Port ExpressCard 54mm USB 3.0 Card Adapter with UASP

StarTech 2-Port ExpressCard 54mm USB 3.0 Card Adapter with UASP

StarTech 2-Port ExpressCard 54mm USB 3.0 Card Adapter with UASP

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Product Highlights

  • Flush-Mount Form Factor Design
  • 2 x SuperSpeed USB 3.0 Ports
  • Data Transfer Rates of up to 5 Gb/s
  • UASP Support for Efficient Data Transfer
  • USB 2.0/1.1/1.0 Backwards Compatible
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StarTech ECUSB3S254F overview

  • 1Description

The 2-Port ExpressCard 54mm USB 3.0 Card Adapter with UASP from StarTech allows you to add two USB 3.0 ports to your ExpressCard-enabled laptop. This SuperSpeed USB 3.0 card supports data transfer rates of up to 5 Gb/s. It is backwards compatible with USB 2.0 and USB 1.1/1.0 with data transfer rates up to 480 Mb/s and 12/1.5 Mb/s, respectively. This USB 3.0 card has a flush-mount design that allows it to sit flush in a standard 54mm laptop ExpressCard slot, creating a seamless add-on that can be left installed even while you are on the move, preventing damage to either the card or the ExpressCard slot.

Enhanced with UASP (USB attached SCSI protocol) support, this USB 3.0 controller performs up to 70% faster than conventional USB 3.0 when paired with a UASP supported enclosure. Using a more efficient protocol than the traditional USB BOT (Bulk-Only Transport), UASP* technology optimizes transfers by allowing multiple commands to be processed simultaneously, significantly increasing transfer speeds for less wait time on data transfers.

Note: *UASP supports Windows 8/Server 2012/Linux kernel 2.6.3 or later. In testing UASP performed with up to a 70% faster read/40% faster write speed over traditional USB 3.0 at peak performance.

The card has a flush-mount design that prevents damage while on the move.
Two SuperSpeed USB 3.0 ports support data transfer rate of up to 5 Gb/s, while still maintaining backwards compatibility with USB 2.0/1.1/1.0
Facilitates time-saving file transfers, up to 70% faster than traditional USB 3.0 when used with a UASP-supported enclosure
This card is compliant with USB 3.0 base specification 1.0, xHCI specification 0.95, and PCIe specification 2.0


Users who need USB connectivity, but do not need to swap between other ExpressCard adapters, so will leave the card installed in the card slot
Mobile users who want to leave ExpressCard adapters installed, without worrying about damage to the card or slot while on the move
Connect high-performance USB 3.0 external storage devices to a laptop
Upgrade an older laptop with USB 3.0 connectivity
Extend your laptop expansion capabilities with additional USB ports
UPC: 065030843577
In the Box
StarTech 2-Port ExpressCard 54mm USB 3.0 Card Adapter with UASP
  • USB to DC Power Adapter Cable
  • Driver CD
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description

    StarTech ECUSB3S254F specs

    Interface USB 3.0 A (9-pin; SuperSpeed) female
    Ports 2
    Data Transfer Rate 5 Gb/s

    Max throughput of card is limited by host bus interface. If used with ExpressCard Gen 1.0 enabled computer, max throughput is 2.5 Gb/s. and with Gen 2.0, max throughput is 5 Gb/s.

    Bus Type ExpressCard
    Card Type 54mm ExpressCard
    UASP Support Yes
    Chipset ID Renesas/NEC - µPD720200
    System Requirement Available ExpressCard/54 slot
    OS Compatibility Windows XP (32/64-bit)/Server 2003 (32/64-bit)/Server 2008 R2/Vista (32/64-bit)/7 (32/64-bit)/8 (32/64-bit)
    Output Voltage 5 VDC
    Center Tip Polarity Positive
    Plug Type A
    Temperature Operating: 32 to 185°F (0 to 85°C)
    Storage: -85 to 257°F (-65 to 125°C)
    Compliance CE, FCC, RoHS
    Dimensions (L x W x H) 2.9 x 2.1 x 0.2" (74.0 x 54.0 x 5.0 mm)
    Weight 0.8 oz (23.8 g)
    Packaging Info
    Package Weight 0.3 lb
    Box Dimensions (LxWxH) 7.0 x 6.0 x 1.0"

    StarTech ECUSB3S254F reviews

    2-Port ExpressCard 54mm USB 3.0 Card Adapter with UASP is rated 2.3 out of 5 by 3.
    Rated 1 out of 5 by from Don't buy it! Difficult to impossible to get to work. I never got mine to work. It was too much hassle and expensive to return, so I threw I away.
    Date published: 2017-03-06
    Rated 4 out of 5 by from Great unit This unit does as advertised. It gives my older laptops the ability to use usb 3.0. I tested and the speeds are way faster then my usb 2.0 ports. So far very happy with it. If you are not careful it will pop out of the port when pulling out UBS cords but this is not a big deal if you are carful. So far my computer has not given me any errors so I am very happy with it.
    Date published: 2014-09-08
    Rated 2 out of 5 by from Worked but with issues. Though it worked in my HP 8560W it generated more heat than I was comfortable with, so I have stopped using this product. There were also issues with downloading the required driver.
    Date published: 2014-11-14
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