DMS-59
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DMS-59 is a connector used to carry two digital DVI and two analog VGA video signals. An interface cable is needed for conversion from DMS-59 to DVI or VGA. Different types of interface cables exist. The connector is generally 4 pins high and 15 pins wide, with a single pin missing from the top row.
The DMS-59 connector is used by ATI, NVIDIA, and Matrox in DELL, HP, and Sun computers with an NVIDIA NVS graphics card. The standard (cheapest) cable provided by DELL has a dual VGA connector, no DVI. A more expensive type has a dual DVI-I connector.
Some confusion is caused by the fact that vendors label cards with DMS-59 as "supports DVI". This means that you may have a "DVI card" with a monitor cable (e.g. DMS-59 to VGA), DVI monitor with a signal cable (e.g. DVI-D to DVI-D), and still not be able to connect one with the other. Such cases can be resolved with a DMS-59 to DVI adapter cable.
The DMS-59 connector is derived from the Molex Low Force Helix connector which can also be found on some (presumably earlier) graphics cards. These ports are similar to the DMS-59 port, but have all 60 pins present, whereas DMS-59 has one pin (pin58) blocked. You cannot put a connector plug with all 60 pins (such as a Molex 88766-7610 DVD-I splitter) into a properly keyed DMS-59 socket.
