shipping Holiday Shipping Details & Extended Holiday Returns
30 Days Hassle-Free Returns


Feel 100% satisfied with your purchase -- with no restocking fees & no return shipping costs* within 30 days of delivery. Learn More
This item is currently out of stock and it may or may not be restocked.
Add To ListFound on 51 wish lists

Are you an E-Blast Insider?

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

  • 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 

detailed view and application

Warranty & Returns

Warranty, Returns, And Additional Information


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

Return Policies