StarTech.com 3-Port Multi Monitor Adapter - DisplayPort 1.4 to 3x 4K DisplayPort Video Splitter - Dual or Triple 4K - Laptop/Desktop DisplayPort MST Hub for Multiple Monitors - For Windows PCs Only (MST14DP123DP)
StarTech.com 2-Port Multi Monitor Adapter - Mini DisplayPort to 2x DisplayPort MST Hub - Dual 4K 30Hz - Video Splitter for Extended Desktop Mode on Windows PCs Only - mDP 1.2 to 2x DP (MSTMDP122DP)