Caldigit TS4: only USB 2.0 speeds on front panel UBC-C?

[hehe299792458]

I tried plugging in my Samsung T5 SSD to both of the front panel USB-C ports on the TS4 dock. The dock itself is connected to my M2 Macbook Pro.

Howver, I noticed I can only get USB 2.0 speeds of 480 mbps. However, when I use the same cable and the same T5 SSD plugged directly into the Macbook Pro, I get 5gbps. I also get 5gbps speeds using the USB-A port on the front panel of the TS4

Curious why am I not getting faster speeds

 

[PaulD-UK]

What else is plugged into the dock? Display(s)?
Are you using the Caldigit cable to connect the dock to the Mac?

 

[hehe299792458]

What else is plugged into the dock? Display(s)?
Are you using the Caldigit cable to connect the dock to the Mac?

Yes, I did use the Caldigit cable to plug the dock into the Mac

Quite a few other things are plugged into the TS4 - two displays running at 1400p, USB speakers, a Thunderbolt 3 10-gigabit ethernet adapter, another Belkin thunderbolt 3 dock (I'm daisy-chaining this dock to the TS4 because some usb hubs won't work connectedly directly to the TS4).

If you're thinking there's not enough bandwidth and that's causing the issue, but the USB-A port can report 5 gbps when connected with a USB A to C cable.

 

[hehe299792458]

Actually I just tried something just now. I'm 95% confident previously I tried both USB-C ports on the ports on the front, but can't be 100% sure. But anyways, I tried both ports again now. And also the back UBC-C port.

Both the back port and the *RIGHT* front port gives me 10gbps. But the *LEFT* front port continues to only give me 480mbps

 

[iStorm]

It's using the USB 2.0 Hub for some reason. Try swapping out the cable you're using to connect the T5 SSD with another USB 3.0 cable if you can. Perhaps there's something wrong with the cable causing it to not register as USB 3.0 every time it's plugged in. (Could explain why you thought both front ports were slow, and now only one of them is slow.)

https://www.reddit.com/r/CalDigit/comments/18zcif9

 

[hehe299792458]

It's using the USB 2.0 Hub for some reason. Try swapping out the cable you're using to connect the T5 SSD with another USB 3.0 cable if you can. Perhaps there's something wrong with the cable causing it to not register as USB 3.0 every time it's plugged in. (Could explain why you thought both front ports were slow, and now only one of them is slow.)

https://www.reddit.com/r/CalDigit/comments/18zcif9

I tried 3 different cables:

An expensive Belkin thunderbolt 3 cable I bought from the Apple Store: USB 2.0 speeds on all ports

A cheap USB 4.0 rated cable on Amazon: back & front RIGHT USB 3.0, front LEFT USB 2.0

The short USB-C cable that came with the T5 SSD: same as Amazon cable


Regarding the front ports, I remember I tried both of them previously and they both reported 480 mbps. But I didn't take screenshots of both, just one of them since they looked the same. But now the RIGHT port reports highest speeds.

So I don't have the evidence (e.g. screenshots) to prove that both front ports were slow previously, but my memory is 90-95% certain both ports reported 2.0 speeds only. But at rate, the right port is now consistently fast while the left one is still slow

 

[PaulD-UK]

If the same port is identifying as both 10Gbps AND 480 Mbps (at different times with different configurations)
then it seems maybe? that this is is not a hardware problem, but arises from USB4 tunnelling - with the dock's USB bus controller(s) being the computer's - not the dock's hardware.
That then looks like a bandwidth sharing situation which the Mac's controllers doesn't handle optimally?

If you try the T5 SSD in the Caldigit ports with nothing else connected to the dock is the result better?

TS4 Interface Bandwidth Allocation and Diagram – CalDigit

www.caldigit.com

According to this there is only one hub allocating a maximum total of 10Gbps to the SD card slots, audio ports and all the US-C and USB-A ports.