StarTech.com 4 Port Dual Bus PCI Express PCIe SuperSpeed USB 3.0 Card Adaptor wi PEXUSB3S42V

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

Features


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


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



Design


Internal

Yes


Maximum cable length

3 m


Hot-swap

Yes


Certification

CE, FCC



Weight & dimensions


Height

120 mm


Width

15 mm


Depth

167 mm


Weight

90 g



Logistics data


Harmonized System (HS) code

84733020



Technical details


Sustainability certificates

RoHS



Features


Chipset

2 x Renesas / NEC - �PD720202


Data transfer rate (max)

5 Gbit/s


UASP support

Yes



Operational conditions


Operating temperature (T-T)

0 - 50 �C


Operating relative humidity (H-H)

5 - 85


Storage temperature (T-T)

-20 - 60 �C



Ports & interfaces


USB 3?2 Gen 1 (3?1 Gen 1) Type-A ports quantity

4


Host interface

PCIe


Expansion card form factor

Full-height / Low-profile


Output interface

USB 3.2 Gen 1 (3.1 Gen 1)


Expansion card standard

PCIe 2.0


Peripheral (Molex) power connectors (4-pin)

1



System requirements


Server operating systems supported

Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2


Linux operating systems supported

Yes



Packaging data


Package height

39 mm


Package depth

209 mm


Package width

145 mm


Package weight

200 g


Manual

Yes


Drivers included

Yes


User guide

Yes