RE: U2715H E6530 ePort Plus Docking Station DisplayPort 1.2 Daisy Chain Multi-Monitor Individual Recognition Windows 8.1
Thanks for all the feedback.
The e-Port Plus does say it supports DP 1.2 http://accessories.us.dell.com/sna/productdetail.aspx?c=us&cs=19&l=en&sku=331-6304 but that doesn't mean the laptop can.
I have not tried messing with any settings in the e6530 BIOS yet. I do have the latest drivers from NVIDIA installed, though.
Although they're talking about Linux, someone posted that NVIDIA NVS 5200M does not support DP 1.2 MST. So looks like I won't be able to Daisy Chain with the E6530 =(
Edit 2: Nvidia tech specs says it supports Multimode? Not sure what that is or if that helps in this scenario: http://www.nvidia.com/object/nvs_techspecs.html