Dell C2722DE 27" 16:9 IPS Video Conferencing Monitor - Manual (Page 21)

About your monitor | 21
DP Multi-Stream Transport (MST) Modes
C2422HE
MST Source Monitor Maximum number of external monitors that can be
supported
1920 x 1080 at 60 Hz
1920 x 1080 at 60 Hz 3
NOTE: Maximum external monitor resolution supported is 1920 x 1080 at 60 Hz only.
C2722DE
MST Source Monitor Maximum number of external monitors that can be
supported
2560 x 1440 at 60 Hz
2560 x 1440 at 60 Hz 1
NOTE: Maximum external monitor resolution supported is 2560 x 1440 at 60 Hz only.
NOTE: USB 3.2 Gen1 reduce to USB2.0
If want to maintain USB 3.2 Gen1 bandwidth, please change to USB 3.2 Gen2 cable
(1m)
USB-C Multi-Stream Transport (MST) Modes
C2422HE
MST Source Monitor Maximum number of external monitors that can be
supported
1920 x 1080 at 60 Hz
1920 x 1080 at 60 Hz 1
C2722DE
OSD Display Info: Link
rate(current)
Maximum number of external monitors that can be
supported
2560 x 1440 at 60 Hz
HBR3(DP 1.4) 1
HBR2(DP 1.2) 0
NOTE: DP output for MST is supported on C2422HE and C2722DE only.