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I bought one of these to replace an OWC 10-port dock. The problems I had with the OWC dock were slow charging, because it's only 60 watts, and the ethernet would not work unless I power cycled the dock with the MacBook Pro connected.

The ethernet on the CalDigit does not have this problem, and the charger supports 85 watts. However, sometimes I will plug it in and the MacBook Pro recognizes everything connected to the dock, but the battery says that it is not charging, and will in fact run down. Sometimes I can fix this by plugging into a different port on the Macbook Pro.

There is a firmware update for the CalDigit, and maybe that will help; however, it requires Catalina, which I cannot run (I still need some 32-bit apps, such as QuickTime). I am going to try to install Catalina on an external drive, boot from that, and update the firmware. What a PITA.
 


Ric Ford

MacInTouch
The ethernet on the CalDigit does not have this problem, and the charger supports 85 watts. However, sometimes I will plug it in and the MacBook Pro recognizes everything connected to the dock, but the battery says that it is not charging, and will in fact run down. Sometimes I can fix this by plugging into a different port on the Macbook Pro.
Note (per the user manual) that only the Thunderbolt 3 "Host" port provides power; the other Thunderbolt 3 port does not. (Also, only one non-Thunderbolt USB-C port is 10Gbps, and those don't provide laptop charging power.)
CalDigit said:
The TS3 Plus features two Thunderbolt 3 Type-C ports that can transfer at speeds up to 40Gb/s. One port is reserved for the connection to your host computer and the second can be used to connect extra Thunderbolt 3 devices. Thunderbolt 3 Type-C supports video and data. The Thunderbolt host port also provides charging up to 87W for your computer.

The TS3 Plus features two USB 3.1 Type-C ports (1 x 5Gb/s, 1 x 10Gb/s). These ports only support data and 1.5Amp (7.5W) of power for charging. Video capabilities are not supported.
 


The ethernet on the CalDigit does not have this problem, and the charger supports 85 watts. However, sometimes I will plug it in and the MacBook Pro recognizes everything connected to the dock, but the battery says that it is not charging, and will in fact run down. Sometimes I can fix this by plugging into a different port on the Macbook Pro.
I have three CalDigit TS3 Plus docks – one at home, one at work and one that is my wife's.

You plug your Thunderbolt 3 cable into the port on the back marked "[computer]" and it charges. Never has failed me. I leave the Thunderbolt 3 cable that came with the dock plugged in and unplug the MacBook Pro (2017 15" MacBook Pro with touchbar and macOS 10.12.6 Sierra) when I leave home and do the same at work. The cable never gets unplugged form the dock, just from the computer.

My only problem is that sometimes when coming home from work and plugging in, the MacBook Pro doesn't always wake up. The display is an LG 27UD68-P 27-Inch 4K UHD. I don't know if it's the display or something else. At work I have an LG 32UD59-B 32-Inch 4K UHD LED, and the MacBook Pro always wakes up when I get there and plug in.

Anyway, charging has never been a problem for me with this dock.
 


I have three CalDigit TS3 Plus docks – one at home, one at work and one that is my wife's....
I have one of these. The first one I received was basically DOA (it supplied power and the video signal passed through to the other Thunderbolt 3 port, but all the other ports didn't work). After a bit of a go-round with CalDigit support, I got a replacement that mostly works. Now all the ports work except that when I plug the 'computer' Thunderbolt 3 cable into my laptop, the video signal out of the other Thunderbolt 3 port doesn't turn on unless I remove and reinsert the monitor's cable. I haven't yet initiated a warranty replacement, but I will soon. Despite the "No Signal" issue with my external monitor, I do like it. I [had plugged] something into all 4 of the ports on my MacBook Pro (two monitors, ethernet adaptor, and power) – now it's almost a single cable to start my day.
 


Ric Ford

MacInTouch
The first one I received was basically DOA (it supplied power and the video signal passed through to the other Thunderbolt 3 port, but all the other ports didn't work). After a bit of a go-round with CalDigit support, I got a replacement that mostly works.
That sounds like it could have been a cable issue – for example, using a USB-C cable instead of a Thunderbolt 3 cable.
Now all the ports work except that when I plug the 'computer' Thunderbolt 3 cable into my laptop, the video signal out of the other Thunderbolt 3 port doesn't turn on unless I remove and reinsert the monitor's cable.
Given all the problems with Macs and external monitors, that may not have anything to do with the Thunderbolt 3 dock. Have you tried other displays or other ports (e.g. the dock's DisplayPort output)? Also, you might want to check the display's on-board settings (e.g. for sleep). What is the make and model of the display?
 


Note (per the user manual) that only the Thunderbolt 3 "Host" port provides power; the other Thunderbolt 3 port does not. (Also, only one non-Thunderbolt USB-C port is 10Gbps, and those don't provide laptop charging power.)
Turns out it was the cable I was using. I had previously purchased a 6-foot-long Thunderbolt 3 OWC cable (to use with the old OWC Thunderbolt 3 dock, and it worked fine). Apparently, in order to be rated for more than 60 watts over a certain length, you need an active cable. Using the short cable that Caldigit supplied, it works fine.
 


The first one I received was basically DOA (it supplied power and the video signal passed through to the other Thunderbolt 3 port, but all the other ports didn't work). After a bit of a go-round with CalDigit support, I got a replacement that mostly works.
That sounds like it could have been a cable issue – for example, using a USB-C cable instead of a Thunderbolt 3 cable.
Now all the ports work except that when I plug the 'computer' Thunderbolt 3 cable into my laptop, the video signal out of the other Thunderbolt 3 port doesn't turn on unless I remove and reinsert the monitor's cable.
Given all the problems with Macs and external monitors, that may not have anything to do with the Thunderbolt 3 dock. Have you tried other displays or other ports (e.g. the dock's DisplayPort output)? Also, you might want to check the display's on-board settings (e.g. for sleep). What is the make and model of the display?
I have two identical 4K LG USB-C/DIsplayPort monitors that were working fine, each with the cable with which it came plugged into a port on my MacBook Pro. Now I have one of them plugged into the TS3+ dock with a DisplayPort cable, and it works great. I have a couple of USB3 drives plugged into the dock, and they work great.

I have tried plugging the other monitor into the non-"computer" Thunderbolt 3 port with each of the monitor cables and a separately obtained Thunderbolt 3 cable. All three cables are able to drive the monitor, but not when the MacBook Pro has been asleep or been disconnected from the dock. Then I have to pull out and then reinsert the cable into the Thunderbolt 3 port on the dock.

The USB-C port on the dock does not supply a video signal (I asked CalDigit).
 



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