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3-Year PC Peripherals Protection Plan

from SquareTrade
  • Coverage for product breakdowns and malfunctions
  • 24/7 customer support
  • Free shipping on all repairs with no deductibles or hidden fees
  • Fully transferable with gifts. Cancel anytime, full refund in the first 30 days
  • If you purchase this service plan and eligible product for this service plan, you acknowledge that Amazon may send the service plan seller relevant product and price information for the purpose of administering the plan

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4 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter w/ 2 Dedicated 5Gbps Channels - UASP - SATA / LP4 Power

4.0 out of 5 stars 311 customer reviews

Price: $69.70 & FREE Shipping. Details
Only 4 left in stock (more on the way).
Want it tomorrow, Aug. 3? Order within and choose One-Day Shipping at checkout. Details
Ships from and sold by Amazon.com. Gift-wrap available.
4 Ext Dual Bus
PCI Express
    This fits your .
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  • Increase the efficiency of your USB 3.0 devices with two dedicated bus channels and up to 5 Gbps of bandwidth per channel
  • Time-saving file transfers, up to 70% faster than traditional USB 3.0 when used with a UASP-supported enclosure
  • Power high-powered USB devices as necessary, with the optional LP4 or SATA power connector
  • Provides four external, USB 3.0 Ports on two independent bus channels
  • Supports up to 10 Gbps total transfer bandwidth - Up to 5 Gbps per two ports
  • UASP support across all four ports
  • PCIe x4 interface compliant with PCI Express 2.0 specifications
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Frequently bought together

  • 4 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter w/ 2 Dedicated 5Gbps Channels - UASP - SATA / LP4 Power
  • +
  • StarTech.com PYO2SATA 6in SATA Power Y Splitter Cable Adapter - M/F
Total price: $75.75
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From the manufacturer

4 Port PCIe SuperSpeed USB 3.0 Card Adapter w/ 2 Dedicated 5Gbps Channels - UASP - SATA / LP4 Power
Add four USB 3.0 ports with two independent channels, LP/SATA power, and charging support to your PC through a PCI Express slot

The PEXUSB3S42V 4-Port PCI Express USB 3.0 Card lets you add four USB 3.0 ports with two dedicated 5 Gbps channels to your PCIe x4-enabled PC. This independent port architecture improves USB 3.0 performance by transferring data on two individual channels to your computer, giving you faster file transfers. When multiple devices are connected, traditional single bus USB 3.0 cards share your maximum bandwidth between all ports. By employing a second host controller chipset, the transmission channel is shared across two ports rather than four. Dedicating up to 5 Gbps for each set of two ports reduces performance bottlenecks, and effectively doubles your total available to bandwidth to 10 Gbps.

Optional LP4 or SATA power

For high-power USB devices, this PCIe USB 3.0 card includes an optional SATA or LP4 power connector to connect to your system power supply and deliver up to 900mA of power per port to USB 3.0 bus-powered devices (500mA for USB 2.0). The USB 3.0 card also supports USB Battery Charging Specification 1.2 (Apple Mode only), letting you charge compatible Apple devices (iPhones and iPads) faster than a standard USB 3.0 port.

Backward compatible with USB 2.0 and USB 1.0/1.1 devices

The controller card is compliant with USB 3.0 standards while offering backward compatibility with existing USB 2.0 / 1.1 devices. For added versatility, the USB 3.0 PCIe card is equipped with a standard profile bracket and includes a low-profile/half-height bracket for installation in small form-factor computers. Backed by a StarTech. com 2-year warranty and free lifetime technical support.

Improved Performance with UASP

UASP is supported in Windows 8, 8.1, Server 2012 and Linux kernel 2.6.37 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.

More UASP Performance Statistics

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 3.0 cards, a UASP-enabled StarTech. com enclosure, and a SATA III solid state drive.

Provides four external USB 3.0 ports

Upgrade an older PCIe-based system to USB 3.0 connectivity and UASP support to fully utilize USB 3.0 devices.

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

Expand the USB capabilities of your system with four external ports for connecting additional external hard drives, CD/DVD drives, MP3 players, printers, scanners, webcams, game controllers, digital cameras, etc. to a computer system.

Includes a Low-Profile/half-height installation bracket

For added versatility, the USB 3.0 PCIe card is equipped with a standard profile bracket and includes a low-profile/half-height bracket for installation in small form-factor computers.

Product Packaging

Look for StarTech. com Branded Packaging to ensure you are getting a genuine StarTech. com product


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This item 4 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter w/ 2 Dedicated 5Gbps Channels - UASP - SATA / LP4 Power
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Customer Rating 4 out of 5 stars (311) 4 out of 5 stars (535) 4 out of 5 stars (1160) 4 out of 5 stars (39) 4 out of 5 stars (600) 4 out of 5 stars (437)
Price $69.70 $24.99 $27.99 $109.00 $16.20 $16.50
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By Amazon.com Inateck Online Inateck Online Amazon.com Rosewill Inc. MAILIYA
Item Dimensions 5.51 x 8.27 x 1.5 in 2.76 x 4.72 x 0.71 in 5.28 x 5.83 x 1.26 in 1.18 x 7.76 x 6.81 in 5.6 x 8 x 1.4 in 3.3 x 4.8 x 0.8 in

Product description

Capacity:4 Ext Dual Bus  |  Style:PCI Express

Add four USB 3.0 ports with two independent channels, LP/SATA power, and charging support to your PC through a PCI Express slot. The PEXUSB3S42V 4-port PCI Express USB 3.0 card lets you add four USB 3.0 ports with two dedicated 5 Gbps channels to your PCIe x4-enabled PC. This independent port architecture improves USB 3.0 performance by transferring data on two individual channels to your computer, giving you faster file transfers. When multiple devices are connected, traditional single bus USB 3.0 cards share your maximum bandwidth between all ports. By employing a second host controller chip set, the transmission channel is shared across two ports rather than four. Dedicating up to 5 Gbps for each set of two ports reduces performance bottlenecks, and effectively doubles your total available to bandwidth to 10 Gbps. Enhanced with UASP support (USB attached SCSI Protocol), this USB 3.0 controller performs up to 70% faster than conventional USB 3.0 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. For high-power USB devices, this PCIe USB 3.0 card includes an optional SATA or LP4 power connector to connect to your system power supply and deliver up to 900mA of power per port to USB 3.0 bus-powered devices (500mA for USB 2.0). the USB 3.0 card also supports USB battery charging specification 1.2 (Apple mode only), letting you charge compatible Apple devices (I phones and iPad) faster than a standard USB 3.0 port.


Product information

Capacity:4 Ext Dual Bus  |  Style:PCI Express

Technical Details

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Technical Specification

Additional Information

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Customer Questions & Answers

Customer reviews

Top customer reviews

on January 25, 2013
Capacity: 4 Ext|Style: PCI Express|Verified Purchase
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0Comment| 49 people found this helpful. Was this review helpful to you?YesNoReport abuse
on November 9, 2014
Capacity: 4 Ext Quad Bus|Style: PCI Express|Verified Purchase
11 comment| 5 people found this helpful. Was this review helpful to you?YesNoReport abuse
on February 5, 2017
Capacity: 4 Ext Quad Bus|Style: PCI Express|Verified Purchase
11 comment| 3 people found this helpful. Was this review helpful to you?YesNoReport abuse

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