Startech PEXUSB3S42V User Manual

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

StarTech ID: 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

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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.

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 UASP­enabled StarTech.com enclosure, and a SATA III solid state drive.

Applications

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

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Features

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

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Technical Specifications

Warranty 2 Years
Bus Type PCI Express
Card Type Standard Profile (LP bracket incl.)
Chipset ID 2 x Renesas/NEC - µPD720202
Industry Standards USB 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
Interface USB 3.0
Port Style Integrated on Card
Ports 4
Connector Type(s) 1 - PCI Express x4 Male
External Ports 4 - USB 3.0 A (9 pin; SuperSpeed) Female
Internal Ports 1 - LP4 (4 pin; Molex Large Drive Power) Female
Internal Ports 1 - SATA Power (15 pin) Plug
Maximum Cable Length 9.8 ft [3 m]
Maximum Data Transfer Rate 5Gbps per 2 ports - 10Gbps Total
Type and Rate USB 3.0 - 5 Gbit/s
UASP Support Yes
OS Compatibility Windows® 8 (32/64), 7 (32/64), Vista (32/64), XP (32/64)

Windows® Server 2012, 2008 R2, 2003 (32/64)

Linux Kernel 2.6.31 or later
System and Cable Requirements Available PCI Express x4 or greater slot
Product Height 2.2 in [55 mm]
Product Length 6.6 in [167 mm]
Product Weight 3.2 oz [90 g]
Product Width 0.6 in [15 mm]
Humidity 5~85% RH
Operating Temperature 0°C to 50°C (32°F to 122°F)
Storage Temperature -20°C to 60°C (-4°F to 140°F)
Shipping (Package) Weight 7.1 oz [200 g]
Included in Package 1 - 4 Port PCIe USB Card
Included in Package 1 - Low Profile Bracket
Included in Package 1 - Driver CD

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Included in Package 1 - Instruction Manual

Certifications, Reports and Compatibility

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