StarTech.com 2 Port USB 2.0 PCI Card. Host interface: PCI, Output interface: PCI 5V 32 bit. Data transfer rate: 480 Mbit/s. Package weight: 0.11 kg. Connectivity technology: Wired, Compatible operating systems: Windows 98SE/ME/2000/XP/Server 2003 + Mac OS 10.2.6 / OS 10.2.8, Compliance industry standards: EHCI