This gives you a multi-monitor setup even if your graphics card has limited ports (or, more likely if you want to avoid desk clutter). Most commonly, daisy chaining is done using DisplayPort ...

and a secondary DisplayPort for daisy-chaining multiple monitors. A built-in 2.5Gbps Ethernet port ensures a fast and stable wired network connection, a rare feature among monitors. It also offers ...

HDMI 2.0b is a solid choice for 4K 60Hz, too, and is available on most cheaper monitors. DisplayPort 2.1 offers up to 80Gbps throughput and daisy-chaining support but is limited to PC and monitors ...

A note of interest from this document is that Mini DisplayPort displays won’t work if connected to the Thunderbolt Display, thus removing any possibility of daisy-chaining with old Mini DisplayPort ...