| From: Erich Welz via talk <talk@gtalug.org> | Most DVI cables (single link) max out at 1920x1200. | | Older versions of the HDMI spec didn't support above 1920x1200, so that | could also be suspect. | | My guess is the only way to get 2560x1600 out of that monitor is via | DisplayPort or dual-link DVI cable Yes. According to <http://www.dell.com/ed/business/p/dell-u3011/pd> the monitor has DisplayPort, audio connectors (supports 5.1 channel audio connection), two HDMI 1.3 and two DVI-D connectors with High-Bandwidth Digital Copy Protection (HDCP). So the right way of connecting to a T450 should be DisplayPort to DisplayPort. A distant second-best way would be an active DisplayPort to dual-link DVI thingee. Those are about $100 (although I've scrounged them on Kijiji for $20). (I have an even older Dell UltraSharp 3007 which only has dual link DVI.) I don't think that a simple DisplayPort to HDMI cable or dongle can support more than 1920x1200@60Hz. I could be wrong. But Michael's experience supports this. A DP cable should be cheap and easy to acquire. <https://www.primecables.ca/c-1049-displayport-cables> (Free shipping on first order over $10) <http://www.canadacomputers.com/index.php?cPath=1340_1440_748> BONUS If you want to be neo-retro, you can buy an audio amplifier with tubes AND bluetooth, triggering free shipping, from primecables. <http://forums.redflagdeals.com/primecablescom-25w-stereo-tube-hybrid-amplifier-usb-bluetooth-115-free-ship-2176890/>