A while back I bought an Dell XPS 15 (9550) laptop with Thunderbolt and DisplayPort over USB-C. This whole USB-C with different supported protocols makes the search for the right converters a mess!

Since I use this laptop as a portable workstation I want my setup to require as few cables connected as possible. So daisy-chaining (MST, Multi-Stream Transport) my 2 DisplayPort monitors (Dell U2515H) would be great.

After a long google search, I came up with a couple of possibilities:

• Google USB-C to DisplayPort cable
  https://store.google.com/product/usb_type_c_to_displayport_cable
  Originally made for the Pixel chromebooks. Specs don't say which version of displayport is supported and whether daisy-chaining is supported.
• Dell USB-C adapter
  http://accessories.ap.dell.com/sna/productdetail.aspx?c=sg&l=en&s=bsd&cs=sgbsd1&sku=470-abnl
  No DisplayPort, but has Gbit Ethernet which is nice.
• Dell USB-C dock
  http://www.dell.com/en-us/shop/accessories/apd/450-aeuo?sku=450-AEUO
  Pricey...
• 3th party cables
  You never know what you get however.

Finally I took the gamble and chose the Google USB-C to DisplayPort cable.  When the monitors are set in DP1.2 mode (you have to do this manually in the display menu) the daisy-chaining of multiple monitors works great!