"The Matrox Millennium G550 PCIe is a dual monitor PCI express graphics card with x1 performance and has Windows and open source display drivers for Linux along with other Unix-like operating systems. * Matrox DualHead to use 2 monitors at a time (in ""independent"" or ""stretched"" mode) * PCI Express card compatible with all compliant PCI Express slots (PCIe x1, x4, x8, and x16) * Passive cooling (heat sink with no fan) for silent operation and extra reliability * Unified Microsoft Windows 2000, Windows XP, and Windows Vista XDDM display drivers for G-series products * Easy-to-use Matrox PowerDesk driver interface * Matrox Clone to view a copy of one display on the other display * Matrox Multi-Display Zoom to view a portion of one display full-screen on the other display * Matrox DVDMax to view hardware-accelerated video playback in a video window on one display and full-screen on the other display * Support for displays with special aspect ratios * Support for customizable unattended installation for rapid multi-system setup * Open-source Linux/Unix display drivers available * Global sales and technical support * 3-year warrantyHardware included * Matrox G550 PCIe graphics card * 2 DVI-to-HD15 connector adaptersSoftware included * Matrox display drivers for Microsoft Windows 2000 and Windows XP * * Matrox PowerDesk (driver interface and utilities)* rivers for Windows Server 2003, Windows XP X64 (64-bit) and Windows Vista XDDM available online. For other possible operating systems, contact Matrox.Optional upgrades * TV-output adapter cable (composite video and S-video, 1-foot)Maximum resolutions (per display) * Digital: 1280 x 1024 * Analog, main display: 2048 x 1536 * Analog, secondary display: 1600 x 1200"