4 Port PCI Express (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
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
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
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 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
Upgrade an older PCIe-based system to USB 3.0 connectivity and UASP support to fully utilize USB 3.0 devices
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
Connector Type(s)PCI Express x4 Male External PortsUSB Type-A (9 pin) USB 3.0 Female Internal PortsLP4 (4 pin; Large Drive Power) Male ''SATA Power (15 pin) Plug Humidity5~85% RH Operating Temperature0°C to 50°C (32°F to 122°F) Storage Temperature-20°C to 60°C (-4°F to 140°F) Bus TypePCI Express Card TypeStandard Profile (LP bracket incl.) Chipset IDRenesas/NEC - µPD720202 Industry StandardsUSB 3.0 Specification Rev. 1.0Industry StandardsUSB Battery Charging Specification Rev. 1.2 (Apple Mode only)Industry StandardsPCI Express Base Specification Rev. 2.0Industry StandardsIntel xHCI Specification Rev. 1.0 InterfaceUSB 3.0 Port StyleIntegrated on Card Ports4 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 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 LineStarTech.com 4 Port USB 3.0 PCIe Card w/ 2 Dedicated Channels - UASP OS CompatibilityWindows® Vista, 7, 8, 8.1, 10OS CompatibilityWindows Server® 2008 R2, 2012, 2012 R2, 2016, 2019 OS CompatibilityLinux 2.6.31 to 4.11.x LTS versions only System and Cable RequirementsAvailable PCI Express x4 or greater slot Included in Package4 Port PCIe USB Card ''Driver CD ''Instruction Manual ''Low Profile Bracket
| Stock code || ICxU3-ST42V|
| Brand || StarTech|
| Series || USB3 PCIe|
| Model || PEXUSB3S42V|
| Type || PCI-Express-x4 Card; 4x USB 3.0 Port + SATA/LP4 Power + UASP - Dual Bus|
| UPC || 065030854597|
| ROHS || Y|
| Date added || 01/07/2014|
PEXUSB3S42V Spec Information
PEXUSB3S42V Spec Connections
|USB3||USB3 type A||External||4|
| Weight (kg) || 0.2kg|
| Weight (bare) || 90g|
| External Length (mm) || 209cm|
| External Width (mm) || 145cm|
| External Height (mm) || 39cm|
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