Hewlett Packard VN566AA RADEON 4650 PCIE 1GB DDR2 2 XDP/1X DVI-I DVI/ VGA ADAPTER Memory: 1GB DDR3 128-bit Bus type: PCIe x16 Ports: 1x Dual Link DVI-I 2x DisplayPort Form factor: Single slot, full height Max display resolution: 2560 x 1600 digital, 2048 x 1536 analog