What are DVI Cables?

Launched in 1999 by the Digital Display Working Group (DDWG), DVI Cables were designed to replace VGA (Video Graphics Array) cables. They provide a digital video transmission standard for devices like computer monitors and projectors, enhancing image quality and device compatibility.

Interface Types

DVI-D (Digital-Only)：Transmits only digital signals, commonly used to connect modern digital displays. It comes in Single Link and Dual Link variants. Single Link supports a maximum resolution of 1920×1200@60Hz, while Dual Link has more pins and higher bandwidth, supporting up to 2560×1600@60Hz or 1920×1080@144Hz for higher resolutions and refresh rates.

DVI-I (Integrated Digital and Analog)：Transmits both digital and analog VGA signals, offering strong compatibility. It can connect to digital displays or older VGA monitors via adapters. Also available in Single Link and Dual Link, its interface includes extra 4 holes on one side for analog signals alongside digital pins.

DVI-A (Analog-Only)：Transmits only analog VGA signals, very rare and mainly used for specific adapter scenarios, such as converting a graphics card’s DVI-I interface to pure VGA.

Key Features

Transmitted Signal Type：DVI Cables primarily transmit video signals and do not support audio. For simultaneous audio transmission, a separate audio cable or other audio-enabled interfaces like HDMI are required.

Connection Stability：DVI interfaces usually feature screw-on fasteners to prevent loose connections and ensure stable signal transmission.

Anti-Interference Capability：High-quality DVI Cables typically have good shielding layers, effectively resisting electromagnetic interference and maintaining signal purity.