Thunderbolt
Supported as part of the daisy chain connected with Intel approved thunderbolt cables. Click here for more information.
Thunderbolt features:
    Legacy : DP 1.1a, DVI-A/D, HDMI and VGA displays attached to the end of the thunderbolt daisy chain via Intel certified dongles
    DP 1.2 redrive: DisplayPort monitors capable of supporting DP 1.2 may be directly attached to the Thunderbolt port to achieve HBR2 and MST functionality.
    DP display with miniDP connector may be attached directly to TB (Thunderbolt) port.
    DP display with standard DP connector and other legacy displays (HDMI, DVI, VGA) may be attached to TB with the use of a dongle.
    DP1.2 MST feature ("daisy-chain" feature) is supported through TB port.

DisplayPort w/MST (Multi-stream Transport)
Supports resolutions up to QFHD 3840 x 2160, 24/30-bit color depth at 60 Hz, and WUXGA (1920 x 1200) monitors, 24/30-bit color depth at 120 Hz.
DisplayPort feature:
Multi-stream Transport (MST): Multi-stream Transport is a DP 1.2 feature that allows daisy chaining of DP 1.2 monitors (requires built in support of DP 1.2 MST in monitor), or the use of DP 1.2 hubs with MST to achieve 4 active displays without a docking station.

DVI-D (single link)
Video signal available through DVI port in optional HP Docking Station (sold separately), as well as through DisplayPort to DVI-D; DisplayPort to DVI-D (dual link); and DisplayPort to HDMI adapters.
Supports resolutions up to 1600 x 1200 at both full and reduced blanking, and 1920 x 1200 at reduced blanking

Supports multi-display, including up to four without a docking station (both with and without hybrid graphics enabled), up to four with HP Advanced Docking Station (sold separately)without hybrid graphics enabled and up to five with HP Advanced Docking Station (sold separately) and hybrid graphics enabled
New Thunderbolt port for high speed data/video/audio transfer support
Thunderbolt port can be connected to monitors supporting DisplayPort 1.2 to achieve HBR2 and MST functionality.