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ShopNIC & Network AdaptersStarTech.com 2 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP - LP4 Power
StarTech.com 2 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP - LP4 Power
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StarTech.com 2 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP - LP4 Power

£24.07

£28.88 inc. VAT

Low Stock(27)MPN: PEXUSB3S25
🚚 Next-day delivery £4.95
Quantity:1
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Key Features

StarTech.com 2 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP
LP4 Power
Dual Port USB 3 PCIe Controller (PEXUSB3S25)
USB adapter
PCI Express x1
USB 3.0 x 2
for P/N: CFASTRWU3, S251SMU33EP, ST103008U2C, ST53004U1C, ST7300U3M, ST93007U2C, UNI251BMU33

Product Overview

AI-generated summary

StarTech’s 2‑port PCIe USB 3.0 card (with UASP) for ~£24 ex‑VAT is the kind of “fix the problem quickly” add‑on I like. If you’ve got a desktop or small server with a shortage of good USB 3 ports, it’s a straightforward way to get reliable SuperSpeed access without faffing about with cheap hubs. In day‑to‑day B2B use (file transfers to external drives, docking stations for staff, occasional backups), UASP can make a noticeable difference versus older USB 3 controllers—especially when you’re pushing lots of small files. It also tends to be more stable than random adapters from the bargain bin, which matters when machines are left running.

That said, I wouldn’t buy it if you expect “real performance” gains for heavy throughput work. It’s a 2‑port card—so if you need multiple high‑speed devices at once, you may hit bandwidth/port contention before the adapter becomes the bottleneck. Also, the “LP4 power” detail matters in some cases: if your system power/cabling situation is awkward, it’s not the cleanest install compared to cards that only rely on the PCIe slot. Overall: good value for light-to-moderate USB expansion on UK desktops, fair call for offices and small IT setups, and a bit of a one-trick pony if you’re trying to build a serious storage or multi-device workload.

Specifications

Ports & interfaces

Host interfacePCIe
Output interfaceUSB 3.2 Gen 1 (3.1 Gen 1)
Expansion card form factorFull-height / Low-profile
Expansion card standardPCIe 2.0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2

Design

InternalY
Maximum cable length3 m
CertificationCE, FCC

Features

ChipsetRenesas / NEC - µPD720202
Data transfer rate (max)5 Gbit/s
UASP supportY

Operational conditions

Operating temperature (T-T)0 - 50 °C
Storage temperature (T-T)-20 - 60 °C
Operating relative humidity (H-H)5 - 85 %

System requirements

Windows operating systems supportedWindows 10 Education,Windows 10 Education x64,Windows 10 Enterprise,Windows 10 Enterprise x64,Windows 10 Home,Windows 10 Home x64,Windows 10 IOT Core,Windows 10 Pro,Windows 10 Pro x64,Windows 10 x64,Windows 7,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 7 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,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 Vista x64
Linux operating systems supportedY
Server operating systems supportedWindows Server 2003,Windows Server 2008 R2,Windows Server 2012,Windows Server 2012 R2,Windows Server 2016,Windows Server 2019

Technical details

Compliance certificatesRoHS

Weight & dimensions

Width18 mm
Depth82 mm
Height120 mm
Weight51 g

Packaging data

Cables includedSATA
Drivers includedY
ManualY
Package width143 mm
Package depth171 mm

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