The Dell SDVO ADD2 DVI-D PCIe x16 Video Adapter Card uses Silicon Image's Sil164 chipset to provide high-quality graphics and video capabilities. With a DVI-D connector, this card is designed for use with PCI Express 2.0 x16 slots, ensuring compatibility and seamless integration into your system. As a single unit sold by Dell, this adapter card offers a reliable and efficient solution for enhancing your computer's graphics performance.