IBM's port is "DVI - D" specification versus "DVI - I". Adapters for DVI-D are hard to come by and may not even work depending on who you believe. I just bought an adapter on ebay, but won't know if it works until I get it ... many sellers don't bother to clearly indicate 24 pin DVI - D versus 29 pin DVI - I ... I've even seen some references to "24+5 pin DVI - D" which as I see it would actually be 29 pin DVI - I. This is very annoying.