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Item#: N82E16812400547

StarTech PEXUSB3S42V 4 Port Dual Bus PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP - SATA/LP4 Power

  • Provides four external, dual bus USB 3.0 Ports
  • Supports up to 10 Gbps total transfer bandwidth - Up to 5 Gbps per two ports
  • UASP support across all four ports
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Learn more about the STARTECH PEXUSB3S42V




PCI Express
Industry Standards:
- USB 3.0 Specification Rev. 1.0
- USB Battery Charging Specification Rev. 1.2 (Apple Mode only)
- PCI Express Base Specification Rev. 2.0
- Intel xHCI Specification Rev. 1.0

Interface: USB 3.0

Connector Type(s): 1 - PCI Express x4 Male

External Ports: 4 - USB 3.0 A (9 pin; SuperSpeed) Female

Internal Ports:
- 1 - LP4 (4 pin; Molex Large Drive Power) Female
- 1 - SATA Power (15 pin) Plug

Maximum Cable Length: 9.8 ft [3 m]

Maximum Data Transfer Rate: 5Gbps per 2 ports - 10Gbps Total

Type and Rate: USB 3.0 - 5 Gbit/s

UASP Support: Yes

Physical Spec

0.59" x 2.17" x 6.57" (W x H x L)


Add 4 SuperSpeed USB 3.0 ports with Quad Bus architecture (5Gbps per port) to your PCI Express-enabled PC

Provides four external, quad bus USB 3.0 Ports

Supports up to 20 Gbps total transfer bandwidth - Up to 5 Gbps per port

UASP support across all four ports

PCIe x4 interface compliant with PCI Express 2.0 specifications

Optional LP4 or SATA power connector provides up to 900mA per USB port

Supports USB Battery Charging Specification 1.2 (Apple Mode only)

Fully compliant with USB 3.0 rev 1.0 and Intel xHCI rev 1.0 specifications

Backward compatible with USB 2.0 and USB 1.0/1.1 devices

Includes a Low Profile/half-height installation bracket

Hot-swap feature to connect/disconnect devices without powering down the system

Add four USB 3.0 ports with two independent channels LP/SATA power and charging support to your PC through a PCI Express slot

Compatible with HP Pro 4300 / Dell OptiPlex 3010

4 Port PCIe USB 3.0 Card w/ 2 Dedicated 5Gbps Channels / USB 3.0 UASP Card

USB 3.0 Controller

USB 3.0 Expansion Card with UASP / SATA Powered USB 3.0 Adapter Card w/ 2 channels and up to 5 Gbps of bandwidth per channel

USB 3.0 PCIe Card with USB Battery Charging Specification 1.2 (Apple Mode device charging only)

Quick Info


  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years

Customer Reviews of the STARTECH PEXUSB3S42V

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  • Elias M.
  • 6/24/2014 12:42:02 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsFast and works with Server 2012 OS

Pros: Works well, external drive now reaches speeds 4x of what I was previously getting (now ~135 MBytes/sec). Pretty much plug and play even for Windows Server 2012 OS.

You may want to invest in a SATA or regular power extension since you'll need to plug either a SATA power cord or a white 4-pin power plug to the card for it to work. This is not optional.

Cons: I dinged it 1 star because it didn't work in my older (Poweredge 2900) server - it just behaved as a USB 2.0 card. However it worked fine right away in my newer T620 server.

Other Thoughts: I looked quite a bit and this seems to be the only USB 3 card that works with Windows Server 2012. If you are backing up large amounts of data you'll see a sizable speed-up going this route.

Did you find this review helpful? Yes No

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USB Display Adapters > 
Item#: N82E16812400547
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