The information in the model description is for reference purposes. Always clarify the specifications and configuration of the product with the online store manager before purchasing. Catalog Startech.com 2025 - new arrivals, bestsellers, and the most relevant models Startech.com.
StarTech.com 4 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter PEXUSB3S42V
Ports & interfacesInternalYesUSB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity4Output interfaceUSB 3.2 Gen 1 (3.1 Gen 1)Periphe... moreral (Molex) power connectors (4-pin)1Host interfacePCIeExpansion card form factorFull-height / Low-profileExpansion card standardPCIe 2.0Technical detailsChipset2 x Renesas / NEC - µPD720202Data transfer rate (max)5 Gbit/sCompliance certificatesRoHSPerformanceUASP supportYesMaximum cable length3 mHot-swapYesChipset2 x Renesas / NEC - µPD720202Data transfer rate (max)5
StarTech.com 4 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter w/ 2 Dedicated 5Gbps Channels
Add four USB 3.0 ports with two independent channels, LP/SATA power, and charging support to your PC through a PCI Express sl... moreot. 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. 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
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 Pc... moreie 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.Features:- 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.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.- 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.The Startech.Com Advantage:- 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 ConnectorSpecifications:Ports & Interfaces:- Host Interface: Pcie- Output Interface: Usb 3.2 Gen 1 (3.1 Gen 1)- Expansion Card Form Factor: Full-Height / Low-Profile- Expansion Card Standard: Pcie 2.0- Usb 3.2 Gen 1 (3.1 Gen 1)
Ports & interfacesInternalYesUSB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity4Output interfaceUSB 3.2 Gen 1 (3.1 Gen 1)Periphe... moreral (Molex) power connectors (4-pin)1Host interfacePCIeExpansion card form factorFull-height / Low-profileExpansion card standardPCIe 2.0Technical detailsChipset2 x Renesas / NEC - µPD720202Data transfer rate (max)5 Gbit/sCompliance certificatesRoHSPerformanceUASP supportYesMaximum cable length3 mHot-swapYesChipset2 x Renesas / NEC - µPD720202Data transfer rate (max)5
StarTech.com 4 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter w/ 2 Dedicated 5Gbps Channels - UASP - SATA / LP4 Pow
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 PC... moreIe 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 StarTech.com 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.
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.
The StarTech.com Advantage
- 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
StarTech.com 4 Port Dual Bus PCI Express (PCIe) SuperSpeed USB 3.0 PEXUSB3S42V
The PEXUSB3S42V 4-Port Dual Bus PCI Express USB 3.0 Card lets you add four dual bus USB 3.0 ports to your PCIe x4-enabled PC.... moreDual bus architecture improves USB 3.0 performance by transferring data on independent 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 dual bus transmission channel is shared across two ports rather than four. Allocating 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
