V - Same issue. Caldigit TS3 Plus + iPad Air 4. With a 2019 16" MacBook Pro connected to the Caldigit with a single thunderbolt cable. I installed the Caldigit update from 2019 exactly as described on their website for resolving the problem for iPad Pro. However it did NOT resolve the problem for iPad Air 4. I did notice that when the iPad Air 4 is plugged into either of the Caldigit's BACK-SIDE ports for USB-C or Thunderbolt, that it does NOT seem to cause the MBP to complain about "USB Accessories being disabled for drawing too much power". I will get this error on the MBP if I plug the iPad Air 4 into the USB-C port on the front of the Caldigit, and no matter how many times I dismiss the error, with will keep popping as a notification on the screen. Also, the iPad Air 4 WILL charge while connected to either the front or back ports of the Caldigit, at about the same rate for all 3 ports. But the MBP cannot see the iPad Air 4, and so will not be able to sync / backup to the MBP over the wired connection. I am currently plugging the iPad Air 4 directly into one of the MBP's 3 other thunderbolt ports to charge and sync the iPad Air 4. Hope this helps.