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Green circuit board with four blue USB ports and a metal bracket

STARTECH

STARTECH PEXUSB3S44V 4-Port PCIe USB 3.0 Expansion Card

SKU CH-WF37-02PR6 MPN PEXUSB3S44V

Adds four USB 3.0 ports with independent 5 Gbps channels and SATA power to a PCIe slot

  • TypePCI Express
  • SpecificationsIndustry Standards: - USB 3.0 Specification Rev. 1.0 - USB B
  • FeaturesAdd 4 SuperSpeed USB 3.0 ports with Quad Bus architecture (5
  • Dimensions0.59" x 2.17" x 6.57" (W x H x L)
  • Weight0.13lb

External USB Ports 4 Ext Quad Bus

Perbrauktos versijos egzistuoja, bet šiame sandėlyje jų nėra.

  • Add four USB 3.0 ports through a PCI Express slot
  • Four independent 5 Gbps channels deliver up to 20 Gbps total bandwidth
  • UASP support enables up to 70% faster transfers with compatible enclosures
  • USB Battery Charging 1.2 in Apple Mode charges compatible devices
  • Includes SATA and LP4 power connectors for flexible installation

Four dedicated USB 3.0 channels

The StarTech PEXUSB3S44V adds four external SuperSpeed USB 3.0 ports through a PCI Express x4 slot. Each port runs on its own host controller chipset, delivering a dedicated 5 Gbps channel instead of sharing a single bus. Total available bandwidth reaches 20 Gbps across all four ports simultaneously.

UASP and charging support

The card implements the USB Attached SCSI Protocol, which can perform up to 70 percent faster than conventional USB 3.0 bulk-only transport when used with a UASP-capable enclosure and a compatible operating system. USB Battery Charging Specification 1.2 in Apple mode allows charging of compatible Apple devices directly from the ports.

LP4 and SATA power input

Two power connectors are provided on the board: a SATA power connector and an LP4 connector, giving flexibility to match the available cables inside the chassis. The low-profile bracket is included for installation in slim or small-form-factor cases. Builders who need internal USB headers or more than four ports will need a different solution.

Privalumai

  • Add four USB 3.0 ports through a PCI Express slot
  • Four independent 5 Gbps channels deliver up to 20 Gbps total bandwidth
  • UASP support enables up to 70% faster transfers with compatible enclosures
  • USB Battery Charging 1.2 in Apple Mode charges compatible devices
  • Includes SATA and LP4 power connectors for flexible installation

Specifikacijos

BrandStarTech.com
ModelPEXUSB3S44V
TypePCI Express
SpecificationsIndustry 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
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
- 1 - SATA Power (15 pin) Plug
FeaturesAdd 4 SuperSpeed USB 3.0 ports with Quad Bus architecture (5Gbps per port) to your PCI Express-enabled PC
Provides four external, quad bus 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 devic
Dimensions0.59" x 2.17" x 6.57" (W x H x L)
Weight0.13lb
Siuntos svoris0.09 kg
Pakuotės dydis208 × 140 × 41 mm

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Does the card need any extra power cables beyond the PCIe slot?

The adapter includes both SATA and LP4 power connectors so you can supply up to 5 Gbps per port without overloading the motherboard slot.

What bandwidth ceiling appears first when all four ports transfer large files continuously?

Each port has a dedicated 5 Gbps channel giving 20 Gbps aggregate, so the PCIe 2.0 x4 host link is the first limit reached under sustained load.

How warm does the board get and does it add fan noise when running all day?

The low-profile design has no onboard fan; heat stays low because each controller handles only its own 5 Gbps stream.

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