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StarTech.com PEXUSB3S44V 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 & charging support to your PC through a PCI Express slot
- Compatible with HP Pro 3500 / Lenovo ThinkCentre M93p
- 4 Port PCIe USB 3.0 Card w/ 4 Dedicated 5Gbps Channels / USB 3.0 UASP Card
- PCIe USB 3.0 Controller
- 4 Independent Port USB 3.0 Expansion Card w/ UASP / SATA Powered USB 3.0 Adapter Card w/ up to 20 Gbps total bandwidth
- USB 3.0 PCIe Card w/ USB Battery Charging Specification 1.2 (Apple Mode device charging only)
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Overview
Specs
Reviews (60)
StarTech PEXUSB3S44V. Brand NewIncludes 2 Year Warranty.. Product # PEXUSB3S44V.. Add four USB 3.0 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 3.0 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
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
Warranty & Returns
Warranty, Returns, And Additional Information
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Warranty Notice:
This product does not include manufacturer warranty when purchased or used outside of its designated sales region. By purchasing internationally, you acknowledge that warranty support from the manufacturer will not be available.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-800-265-1844
- Support Email: support@startech.com
- Support Website
- View other products from STARTECH
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The StarTech.com PEXUSB3S44V is a PCIe x4 expansion card that adds four USB 3.0 ports with independent 5 Gbps channels, making it suitable for desktop PC users who need more high-speed USB connectivity and up to 20 Gbps of combined bandwidth.
Recommended For
- Desktop users who transfer files between multiple USB 3.0 storage devices and want each port on a separate host-controller channel rather than sharing one card-level USB bus.
- PC VR users troubleshooting USB connection or bandwidth issues with headsets such as the Oculus Rift S; community reports describe using this card to add a dedicated USB controller for the headset.
- Desktop owners who need four additional USB-A ports for peripherals or external drives and have an available PCIe x4 slot, including small-form-factor PCs that can use the included low-profile bracket.
- Users connecting several bus-powered USB devices who can connect SATA or LP4 power from the PC’s power supply to support the card’s per-port power provision.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Adding four USB 3.0 ports to a PCIe-enabled PC, with independent 5Gbps channels, UASP support, and optional device charging |
| Interface And Ports | PCI Express x4 card with four USB 3.0 Type-A SuperSpeed female ports; backward compatible with USB 2.0 and USB 1.0/1.1 devices |
| Bandwidth And Data Features | Quad-bus architecture provides up to 5Gbps per port and 20Gbps total bandwidth, with UASP support on all four ports |
| Power And Charging | Optional LP4 or SATA power input provides up to 900mA per USB port; supports USB Battery Charging Specification 1.2 in Apple Mode only |
| Standards And Compatibility | Complies with PCI Express 2.0, USB 3.0 revision 1.0, and Intel xHCI 1.0 specifications; listed as compatible with HP Pro 3500 and Lenovo ThinkCentre M93p |
| Installation And Use | Includes a low-profile/half-height bracket and supports hot-swapping devices without powering down the system |
| Dimensions And Weight | 0.59 × 2.17 × 6.57 in (W × H × L); 0.13 lb |
| Model Identifiers | StarTech.com PEXUSB3S44V |