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Plugable PCI Express to SuperSpeed USB 3.0 Two-Port Expansion Card - Plugable
Upgrade any Windows-based desktop to Super Speed USB 3.0 REQUIRES: Windows XP, Vista, Windows 7 or later, one free standard or low profile PCIe x1 slot. SPEED: Theoretical maximum speed of USB 3.0 is 5Gbs and PCI-e 1x is 4Gbs.