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Add four USB 3.0 (USB 3.2 Gen 1) ports with four independent channels, LP/SATA power, and charging support to your PC through a PCI Express slot

The PEXUSB3S44V 4-Port PCI Express USB 3.2 Gen 1 Card lets you add four, dedicated 5 Gbps USB 3.2 Gen 1 ports to your PCIe x4-enabled PC. This independent port architecture improves USB 3.2 Gen 1 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 3.2 Gen 1 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 3.2 Gen 1 controller performs up to 70% faster than conventional USB 3.2 Gen 1 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 3.2 Gen 1 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 3.2 Gen 1 bus-powered devices (500mA for USB 2.0). The USB 3.2 Gen 1 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 3.2 Gen 1 port.

The controller card is compliant with USB 3.2 Gen 1 standards while offering backward compatibility with existing USB 2.0 / 1.1 devices. For added versatility, the USB 3.2 Gen 1 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 3.2 Gen 1 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 3.2 Gen 1 cards, a UASP-enabled StarTech.com enclosure, and a SATA III solid state drive.

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) Type-A ports quantity: 4
Peripheral (Molex) power connectors (4-pin): 1
Design
Feature: Internal
Product colour: Black
Maximum cable length: 3 m
Features
Chipset: Renesas/NEC - µPD720202
Data transfer rate (max): 20 Gbit/s
Feature: UASP support
Operational conditions
Operating temperature (T-T): 0 - 50 °C
Storage temperature (T-T): -20 - 60 °C
Operating relative humidity (H-H): 5 - 85%
System requirements
Linux operating systems supported: Yes
Server operating systems supported: Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019
Technical details
Compliance certificates: RoHS
Weight & dimensions
Width: 15 mm
Depth: 167 mm
Height: 120 mm
Weight: 92 g
Packaging data
Feature: Drivers included
Feature: Manual
Feature: User guide
Package width: 211 mm
Package depth: 146 mm
Package height: 41 mm
Package weight: 202 g
Logistics data
Harmonized System (HS) code: 84733020
Products per master (outer) case: 40 pc(s)
Master (outer) case width: 444 mm
Master (outer) case length: 425 mm
Master (outer) case height: 319 mm