Dell Precision 7680 Connection Manual page 8

*When connecting using docking station, additional external displays can be connected under Hybrid mode (with Internal Display
Off).
NOTE: Discrete mode and UMA modes are disabled when additional external displays are connected using docking station.
Table 5. Supported display using docking station under Hybrid mode
Hybrid mode
TBT Dock
Single Cable Dock
Dual Cable Dock
Table 6. Supported display using docking station under Discrete mode
Discrete mode
TBT Dock
Single Cable Dock
Dual Cable Dock
8 Connect displays
Type-C TBT + DP + DP + HDMI/MFDP: *4k@60 Hz +
2k@60 Hz*3
● DP + DP + HDMI : FHD@60 Hz*3
● DP + DP + MFDP : FHD@60 Hz*3
● DP + DP + HDMI: 2k@60 Hz*3
● DP + DP + MFDP: 2k@60 Hz*3
● DP + DP: 8K@60 Hz*1
● DP + HDMI: 4K@60 Hz*2
● MFDP/HDMI+DP1+DP2: 4K@60 Hz*3
● TBT + DP1+DP2+HDMI: 4K@60 Hz*4
● DP + DP: 4K@60 Hz *2
● DP + HDMI: 4K@60 Hz*2
● DP + MFDP: 4K@60 Hz*2
● DP + DP: 8K@60 Hz*1
● DP+DP+HDMI/MFDP: 4K@60 Hz*3
● Up to 3 if internal display
on
● Up to 4 if internal display
off
● Connect either HDMI
or MFDP only, do not
connect both of them.
● Up to 3 if internal display
on
● Up to 4 if internal display
off
● Connect either HDMI
or MFDP only, do not
connect both of them.