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StarTech 4Port PCIe USB 3.0 Controller Card w/ 2 Independent Channels

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MSRP: $196.00
$149.00 inc GST
— You save $47.00


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. 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. See our UASP test results below for further details. 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. 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 2-year warranty and free lifetime technical support. Improved Performance with UASP In testing UASP performed with up to a 70% faster read / 40% faster write speed over traditional USB 3.0 at peak performance. UASP Speed Diagram At the same peak in testing, UASP also showed up to an 80% reduction in required processor resources. UASP Speed Diagram Test results were obtained using an Intel® Ivy Bridge system, add-on USB 3.0 cards, a UASP-enabled enclosure, and a SATA III solid state drive.

Port StyleIntegrated on Card
Packaging Information
Package Height39 mm [1.5 in]
Package Length20.9 cm [8.2 in]
Package Width14.5 cm [5.7 in]
Shipping (Package) Weight200 g [7.1 oz]
Maximum Cable Length3 m [9.8 ft]
Maximum Data Transfer Rate5Gbps per 2 ports - 10Gbps Total
Type and RateUSB 3.0 - 5 Gbit/s
UASP SupportYes
InterfaceUSB 3.0
Industry StandardsUSB 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
Chipset IDRenesas/NEC - ᄉPD720202
Card TypeStandard Profile (LP bracket incl.)
Bus TypePCI Express
Storage Temperature-20ᄚC to 60ᄚC (-4ᄚF to 140ᄚF)
Operating Temperature0ᄚC to 50ᄚC (32ᄚF to 122ᄚF)
Humidity5~85% RH
Internal PortsSATA Power (15 pin) Plug
LP4 (4 pin; Large Drive Power) Male
External PortsUSB Type-A (9 pin) USB 3.0 Female
Connector Type(s)PCI Express x4 Male
Physical Characteristics
Product Height12 cm [4.7 in]
Product Length16.7 cm [6.6 in]
Product Width15 mm [0.6 in]
Weight of Product90 g [3.2 oz]
Description CDW 75 - 1st 4 Port USB 3.0 PCIe Card w/ 2 Dedicated Channels - UASP
OS CompatibilityWindowsᆴ Vista, 7, 8, 8.1, 10
Windows Serverᆴ 2008 R2, 2012, 2012 R2, 2016, 2019
Linux 2.6.31 to 4.11.x LTS versions only
Special Notes / Requirements
System and Cable RequirementsAvailable PCI Express x4 or greater slot
What's in the Box
Included in Package4 Port PCIe USB Card
Driver CD
Instruction Manual
Low Profile Bracket
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Warranty Information

2 Year
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Additional Information

In Stock
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