4 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter w/ 4 Dedicated 5Gbps Channels - UASP - SATA / LP4 Power
Add four USB 3.0 ports with four independent channels, LP/SATA power, and charging support to your PC through a PCI Express slot
Provides four external, independent USB 3.0 Ports
Supports up to 20 Gbps total transfer bandwidth - Up to 5 Gbps per port
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 PEXUSB3S44V 4-Port PCI Express USB 3.0 Card lets you add four, dedicated 5 Gbps USB 3.0 ports to your PCIe x4-enabled PC. This independent port architecture improves USB 3.0 performance by transferring data on four 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 four host controller chipsets, each port operates on a separate independent transmission channel. Dedicating up to 5 Gbps to each USB port reduces performance bottlenecks, and effectively quadruples your total available to bandwidth to 20 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
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 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 four dedicated bus channels and up to 5 Gbps of bandwidth per channel - 20 Gbps total
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, Molex 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 ID4 x Renesas / NEC -
| Stock code || ICxU3-ST44V|
| Brand || StarTech|
| Series || USB3 PCIe|
| Model || PEXUSB3S44V|
| Type || PCI-Express-x4 Card; 4x USB 3.0 Port + SATA/LP4 Power + UASP - Quad Bus|
| UPC || 065030854627|
| ROHS || Y|
| Date added || 01/07/2014|
PEXUSB3S44V Spec Information
| Form Factor / Drive Height || 75mm x 19mm x 68mm|
| Guarantee || 2yr|
| Total Drives || 4|
PEXUSB3S44V Spec Connections
|USB3||USB3 type A||External||4|
| Weight (kg) || 0.2kg|
| External Length (mm) || 210cm|
| External Width (mm) || 140cm|
| External Height (mm) || 38cm|
Why People Choose Us?
14 Day Return Guarantee
If you change your mind, you can return all or part of your order.
Next Day Delivery
Order before 4pm*, and in-stock products will be with you the next day. (Or Saturday. Or even Same Day).
Wherever you are in the world, we can get your order to you at high speed.
SpanStor Build & Test
Our free service helps you choose the right NAS and Drives, then makes sure it is built & ready to use as soon as you get it.
Professional Live Support
We are here to assist you - before, during and after your purchase, by phone, email or live chat.