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Product specifications

StarTech.com 2 Port Flush Mount ExpressCard 54mm SuperSpeed (5Gbps) USB 3.0 Card Adapter with UASP Support - TAA

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StarTech 2 Port Flush Mount ExpressCard 54mm SuperSpeed (5Gbps) USB 3.0 Card Adapter with UASP - Dual Port Laptop ExpressCard USB 3 Controller , TAA (ECUSB3S254F)

Part ECUSB3S254F · UPC 065030843577

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  • Unique flush-mount form factor design
  • Two SuperSpeed USB 3.2 Gen 1 compliant ports with support for transfer rates up to 5 Gbps
  • UASP support for more efficient data transfer
  • Backward compatible with USB 2.0/1.x devices
  • Compliant with USB 3.2 Gen 1 base specification 1.0 and xHCI specification 0.95
  • Compliant with PCI Express specification 2.0
  • Built-in external DC power connector (optional)

About this product

Add two flushmount USB 3.0 (USB 3.2 Gen 1) ports to your ExpressCard-enabled laptop

The ECUSB3S254F 2-Port Flush Mount USB 3.2 Gen 1 ExpressCard Adapter lets you add two USB 3.2 Gen 1 ports to your ExpressCard-enabled laptop.

The USB 3.2 Gen 1 card uses a unique 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 on the move, without having to worry about impact damage to either the card or the ExpressCard slot.

Enhanced with UASP support (USB Attached SCSI Protocol), this USB 3.2 Gen 1 controller performs up to 70% faster than conventional USB 3.2 Gen 1 when paired with a UASP supported enclosure (Note: UASP requires a compatible operating system). 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. See our UASP test results below for further details.

The SuperSpeed USB 3.2 Gen 1 Card supports data transfer rates of up to 5Gbps, and is backward compatible with USB 2.0 (at up to 480Mbps), or USB 1.1/1.0 at up to 1.5/1.2 Mbps respectively - the perfect laptop accessory for users to connect USB devices, both new and old.

Backed by a StarTech.com 2-year warranty and free lifetime technical support.

Improved Performance with UASP

UASP is supported in Windows® 8 and Server 2012. In testing UASP performed with up to a 70% faster read / 40% faster write speed over traditional USB 3.2 Gen 1 at peak performance.

At the same peak in testing, UASP also showed up to an 80% reduction in required processor resources.

Test results were obtained using an Intel® Ivy Bridge system, StarTech.com add-on USB 3.2 Gen 1 cards, a UASP-enabled StarTech.com enclosure, and a SATA III solid state drive.

Manufacturer warranty information

2 Years

Ports & interfaces

Host interface
ExpressCard
Output interface
USB 3.2 Gen 1 (3.1 Gen 1)
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
2

Design

Internal
Yes
Product colour
Black

Features

Chipset
NEC uPD720200

Operational conditions

Operating temperature (T-T)
0 - 85 °C
Storage temperature (T-T)
-65 - 125 °C

System requirements

Windows operating systems supported
Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 Pro, Windows 10 Pro x64, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64, Windows 8.1, Windows 8.1 Enterprise, Windows 8.1 Enterprise x64, Windows 8.1 Pro, Windows 8.1 Pro x64, Windows 8.1 x64, Windows Vista Business, Windows Vista Business x64, Windows Vista Enterprise, Windows Vista Enterprise x64, Windows Vista Home Basic, Windows Vista Home Basic x64, Windows Vista Home Premium, Windows Vista Home Premium x64, Windows Vista Ultimate, Windows Vista Ultimate x64, Windows XP Home, Windows XP Home x64, Windows XP Professional, Windows XP Professional x64

Weight & dimensions

Width
54 mm
Depth
74 mm
Height
5 mm
Weight
23.8 g

Packaging data

Package width
143 mm
Package depth
173 mm
Package height
32 mm
Package weight
105 g

Logistics data

Harmonized System (HS) code
84733020
Products per master (outer) case
75 pc(s)
Master (outer) case width
350 mm
Master (outer) case length
690 mm
Master (outer) case height
320 mm

Other features

Data transfer rate
5 Gbit/s
Compatible operating systems
Windows XP(32/64-bit)/ Server 2003(32/64-bit)/ Vista(32/64-bit)/ Server 2008 R2/ 7(32/64-bit)

Specifications and images: Database Right data-sheet 2026 Icecat. All rights reserved. Supplied as is, without warranty. Specs Icecat · Open Content License

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