This PC Card provides 2 external USB 2.0 high speed ports to any notebook with card expansion slot. It is plug & play and works with Windows & Mac systems. This Type II PC card upgrades computers with USB 1.1 (12Mbps) or those with no USB port to take advantage of 480Mbps USB peripherals such as storage drives, CD/DVD, scanners and printers. Includes power adaptor to provide maximum power for all USB peripherals and PC Card 7.0 compliant. The driver is built-in with the OS. Requirements: Windows 98SE or Mac OS 8.6 or higher with driver software built-in with the OS. (Connectors: 2 USB A Female)