Can I connect two Dell U2723QE Monitors to a MacBook Pro 2020? I am daisy chaining the two monitors together using the Displayport cable supplied by Dell plugged into the 90W DP port of each monitor but the second monitor is black. The first monitor connects and works but the second "Slave" monitor doesn't. Is the MacBook Pro 2020 not capable of supporting two monitors?
MacBook Pro 13″, macOS 10.15
Physis2 wrote:
I have the MacBook Pro (13-inch, 2020, Four Thunderbolt 3 ports).
Your Mac can support two 4K monitors.
My MBP is connected to a CalDigit TS3. I am using genuine Thunderbolt cables. Besides trying to daisy chain the monitors, I've tried connecting through the CalDigit and also connecting direct connections from the monitors to the MBP. In both situations my MBP will have one screen and only one monitor will connect as a secondary monitor.
Daisy-chaining will not work – whether you daisy-chain them from a Mac host port, or from any of the ports on that Thunderbolt dock.
Based on the description of the Thunderbolt dock that Mr. Bennet-Alder provided, I believe that this would work:
If you wanted to use the downstream USB and Ethernet ports on the first monitor (the one hooked up using a DP to DP cable), you'd need to run a separate USB cable from the Mac or the CalDigit TS3 dock to it. I'm guessing that between the CalDigit dock and the downstream ports that you could get on the second monitor by using a USB-C to USB-C connection that you're not going to care about making a USB connection to the first monitor.
Yes, all the cable connections that you stated above are accurate. I have already confirmed that the second monitor connects individually when I disconnect the first monitor and connect to the second alone. The problem is I can't get them both to work simultaneously. I've confirmed all the connections multiple times referring to the respective websites for the Dell Display and CalDigit TS3 diagram sheets. I'm only using the CalDigit Thunderbolt cable, a new Apple Thunderbolt 4 cable and a DP cable to make my connections. I've tried switching out cables and using the USB-C cable that came with the new monitor and that doesn't work.
I've also tried other configurations and turned on and off the "Multiple Monitor Sync" and the "Multiple Monitor Inputs" on the Dell monitors.
What else can I do?
I purchased another Apple genuine certified Thunderbolt cable and it still doesn't work. What am I doing wrong?
what connection is working?
what connection is not working?
When I plug the monitors directly to the MBP via Thunderbolt cables only one monitor will be active. If I disconnect one monitor then the other will work but not both at the same time.
Both cables work interchangeably regardless of monitor.
One cable is the CalDigit Thunderbolt 3 cable 0.5 meter and the other is Thunderbolt 4 at 1 meter.
Only one monitor works regardless. They both work individually connected directly to the MBP. If they are both connected then only one works.
Connecting two Dell U2723QE Monitors to a MacBook Pro 2020
