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Green circuit board with four blue USB ports and a SATA power connector

STARTECH

STARTECH PEXUSB3S42 4-port USB 3.0 PCIe expansion card

SKU CH-TXQV-VXWEN MPN PEXUSB3S42

Adds four USB 3.0 ports — three external and one internal — via PCI Express with standard and low-profile brackets included

  • TypePCI Express to USB Card
  • External USB Ports16x USB Ports
  • External Ports3 - USB 3.0 A (9 pin; SuperSpeed) Female
  • Internal Ports1 - SATA Power (15 pin) Plug 1 - USB 3.0 A (9 pin; SuperSpee
  • StandardUSB 3.0
  • Data Transfer RateUp to 5.0 Gbps
  • Add four USB 3.0 ports with three external and one internal connection
  • Achieve up to 5.0 Gbps data transfer rates per port
  • Includes both standard and low-profile brackets for flexible installation
  • Supports Windows 8.1, 8, 7 and Linux 2.6.31+ without extra drivers
  • Power internal devices via a 15-pin SATA power connector

Four USB 3.0 ports via PCI Express

This StarTech.com PEXUSB3S42 card adds four SuperSpeed USB 3.0 connections through a single PCIe slot. Three ports face the rear bracket for external peripherals. One port sits on the board for internal devices such as a front-panel header or flash module. The adapter includes both standard and low-profile brackets to fit different chassis heights.

Desktop builders adding legacy USB 3.0 ports

The card suits owners of older Windows or Linux systems that already support USB 3.0 natively and need extra Type-A connectors. It draws auxiliary power from a 15-pin SATA plug, so a free power lead is required. Buyers whose motherboards lack a spare PCIe slot or who need USB 3.1 Gen 2 or Type-C connectivity should consider other options.

One internal SATA power connector required

A 15-pin SATA power connection on the card must be linked to the power supply for the ports to operate. Without that link the controller will not enumerate attached devices. The board measures 4.70 by 3.40 inches and weighs 0.13 lb, fitting most low-profile or full-height slots.

Points forts

  • Add four USB 3.0 ports with three external and one internal connection
  • Achieve up to 5.0 Gbps data transfer rates per port
  • Includes both standard and low-profile brackets for flexible installation
  • Supports Windows 8.1, 8, 7 and Linux 2.6.31+ without extra drivers
  • Power internal devices via a 15-pin SATA power connector

Caractéristiques

BrandStarTech.com
ModelPEXUSB3S42
TypePCI Express to USB Card
External USB Ports16x USB Ports
External Ports3 - USB 3.0 A (9 pin; SuperSpeed) Female
Internal Ports1 - SATA Power (15 pin) Plug
1 - USB 3.0 A (9 pin; SuperSpeed) Female
StandardUSB 3.0
Data Transfer RateUp to 5.0 Gbps
Operating Systems SupportedWindows® 8 / 8.1 (32/64bit), 7 (32/64), Vista (32/64), XP (32/64)
Windows Server® 2012, 2008 R2
Linux 2.6.31 and up (Tested up to 3.5)
Features4 Port PCIe USB 3.0 Card
Cost-effective USB 3.0 Adapter Card
USB card with standard and low-profile brackets
Connect 3 external devices with the flexibility to connect an internal USB device such as a flash drive
four USB 3.0 ports – three external and one internal port – to your computer
Easy to install with native OS support in Windows 8.1 8 and 7
Dimensions4.70" x 0.70" x 3.40"
Weight0.13 lb.
Package Contents1 - 4 Port PCI Express USB 3.0 Card
1 - Low-Profile Bracket
1 - Driver CD
1 - Instruction Manual
Poids d’expédition0.20 kg
Dimensions du colis170 × 142 × 28 mm

Questions sur cet article

Should I choose this card if I need both external and internal USB 3.0 ports?

This model provides three external USB 3.0 Type-A ports and one internal USB 3.0 Type-A port, so a single card adds both connection types.

What does the 5.0 Gbps rate mean for actual file transfers?

The 5.0 Gbps signalling rate is the USB 3.0 maximum; real-world throughput will be lower due to protocol overhead and the PCIe lane configuration used.

Which PCIe slot standard does the card use and what bandwidth does it provide?

The card installs in a standard PCI Express slot; the USB 3.0 controller is limited to 5.0 Gbps per port regardless of the slot generation.

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