Several years ago, NVIDIA and ATI tried to ship graphic cards with DSM59 outputs on high end adaptors with little success.  Dual Monitor System 59 (DMS59) is a 59-pin external interconnect for graphic cards.  The 59 pin cable can transmit two DVI signals at a time after which an adaptor can split the pin-out into any dual output combination of two DVI and two 15-pin D-sub outputs. 

At CeBIT 2006, GeCube will announce its low profile Radeon X1600 Pro adaptor with a single DMS59 output.  Corporate product managers from the company hinted to us that the X1600 Pro is just the first of a series of cards from GeCube that will reintroduce the DSM59 interconnect -- future plans include a dual DMS59 Radeon that would effectively allow one to connect four displays to a single card.  The Radeon X1600 to be announced does not support HDCP compatibility, but if it did the DMS59 interface would have no problem transmitting the signal we are told.

Molex owns the royalties on DMS59, which may have lead to the failure of manufacturers to adopt the interconnect standard.  With the glass ceiling of graphic card pricing constantly rising, the licensing fee for the DMS59 interface is now a considerably smaller percentage of the build cost compared to three years ago.