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Rosewill RC-508 USB 3.0 PCI-E Express Card with 4 USB 3.0 Ports, Speed Up to 5.0 Gbps

In stock. Limit 20 per customer.
Ships from United States.
  • PCI Express to USB Card
  • 4 x USB 3.0 Downstream Ports
  • Up to 5.0 Gbps Data Transfer Rate
  • Supports USB Battery Charging Specification Revision 1.2
  • Supports Simultaneous Operation of Multiple USB 3.0, USB 2.0 and USB 1.1 Devices
  • Hot-Swapping Feature that Allows You to Connect / Disconnect Devices without Powering Down the System

The Rosewill RC-508 is a PCI Express to USB add-on card. It easily connects to a motherboard via PCI Express (X1) interface to add four USB 3.0 downstream ports to your PC instantly. This means you can effortlessly connect multiple USB devices to your PC. The USB 3.0 ports support different data transfer rates – including low-speed (1.5Mbps), full-speed (12Mbps), high-speed (480Mbps), and super-speed (5Gbps). The hot-swapping feature allows you to connect/disconnect devices without powering down the system. The built-in 4-pin power connector allows for receiving extra power supply from system.

See Details

  • Single-lane (x1) PCI Express throughput rates up to 5Gbps 
  • Support USB Battery Charging Specification Revision 1.2 
  • Fully compliant with PCI Express Base Specification Revision 2.0 
  • Compliant with Universal Serial Bus 3.0 specification Revision 1.0 
  • Supports simultaneous operation of multiple USB 3.0, USB 2.0 and USB 1.1 devices 
  • Compliant with Intel's eXtensible Host Controller Interface (xHCI) Specification Revision 1.0 

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Warranty & Returns

Warranty, Returns, And Additional Information


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Return Policies

    We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1, 2020 and December 24, 2020 you will have until January 31, 2021 to return your product. There's nothing additional that you have to do!
  • Return for refund until: January 31, 2021
  • Return for replacement until: January 31, 2021
  • This item is covered by's Extended Holiday Return Policy