Thunderbolt 2 Mini Displayport | Displayport Cable Thunderbolt - Audio & Video Cables - Aliexpress
Displayport 1.2 vs Displayport 1.4
StarTech.com 4m (13ft) Mini DisplayPort to DisplayPort 1.2 Cable, 4K x 2K mDP to DisplayPort Adapter Cable, Mini DP to DP Cable - 4m/13.1ft Mini-DP to DisplayPort v1.2 cable; 4Kx2K(3840x2400 60Hz)/21.6 Gbps
Compare DisplayPort 1.2 vs DisplayPort 1.4
Amazon.com: Tripp Lite DisplayPort 1.2a to HDMI Adapter Cable, Active with Gripping HDMI Plug M/M DP 4K, 3' (P582-003-HD-V2A) : Everything Else