DVI-D Dual Link Cable

When it comes to DVI cables, currently the most commonly used types are DVI-D dual link cable, DVI-D single link cable, DVI-I dual link cable, DVI-I single link cable, DVI-D to VGA cable and DVI-A cable and the like. Although there are only two standard types of Digital Visual Interface, as you know now that its cables and adapters are relatively much more complex than you thought.

What is DVI-D dual link cable?

There are two different types of DVI-D cables when it comes to the number of links. They are dual and single link respectively.

Dual link

Dual link DVI-D cable, as its name suggests, provides double capability of single Digital Visual Interface. It has 3 rows of 8 pins, namely 24 pins in total, which are completely corresponding to the 24 pinholes on the standard female connector. This type of DVI 24+1 pins has no analog pins, which makes it pass through only digital signals.

Another one being mixed very often is DVI-I dual link cable. However, the difference between them is quite obvious as it has the most pins of 24+5. Such structure of DVI dual link cables allow transmitting both analog and digital dual-link signals as integrated mode supports both of them.

Single link

To make dual link DVI cable understood easier, comparing it to single link DVI cable is very necessary. DVI-D single link cable has 3 rows of 6 pins and misses the middle 2 pins. There are 18 pins in total but without analog pins as well. This type of DVI single link cable provides the most basic function of a single-link pure digital signal transmission only.

Difference between dual and single link

In addition to the difference on number of pins, the transmission bandwidth between them is also different. According to the Digital Visual Interface standard, single-link DVI interface provides maximum bandwidth of 165MHz. That is to say it transfers 165M pixels per second, which means it provides a maximum resolution of 1600*1200 @ 60Hz. If you need to display it in the display with bigger resolution, you have to rely on the dual-link DVI connection specification because dual-link mode provides twice bandwidth compared to single-link mode.

However, currently the commonly used liquid crystal display is 19-inch screen or 20-inch widescreen. Very few people would need large-screen display. Therefore, usually single link DVI is enough for most of family applications. If you would like to use large-screen LCD display, in many cases a 24-pin DVI-D dual link adapter or cable may be required.

Typical DVI-D dual-link digital cable

Since quality dual link DVI cables are the necessary condition for the quality picture in bigger display devices. If you also want to enhance your visual experience, here is a typical model that can meet your requirements.

1. Pure copper non-magnetic 24K gold-plated plug, which is with good conductivity, rust resistance and excellent durability;
2. Adopt conductor made of 24AWG 99.99% purity OFC oxygen-free copper. Fully supports 2560*1600, 2048*1536, 1920*1200, 1680*1050, 1920*1080, 1440*900 resolutions etc;
3. Support for high-120HZ refresh rate and 3D display;
4. The outer layer of wire adopts high quality shielding aluminum foil and high-density tinned copper braid. Its giant compression molding double-bead design can remove high frequency interference and isolate EMI/RFI electromagnetic interference effectively. All these policies taken are to ensure it works under the best condition in all different environments;
5. The locking screw design allows a secure and reliable connection.

For common family applications, the above-mentioned DVI-D dual link cable is good enough for you already. By the way, Belkin DVI dual link cable is a not bad option too.