Can I use the Thunderbolt 4 KVM Switch (SB-TB4K) with Thunderbolt 4 hubs?

• SB-TB4K
• Connections
• Power

• MA

  Michael Alderete

  1/25/25, 6:23 PM

  As stated in a few other posts, the SB-TB4K KVM Switch doesn't supply power to both connected Thunderbolt devices, because that's against the TB4 certification. Complying with the certification is a Good Thing.

  But, I have two laptops, which I switch between on my Apple Studio Display. Having to separately power the inactive laptop is a bit of an irritation. I'm hoping I have a solution, but I want to check and see if it's a supported and safe configuration.

  I would like to plug each laptop into a CalDigit Thunderbolt 4 Element Hub, and then connect those hubs into the SB-TB4K. So each laptop would have a dedicated hub, and the KVM switches between the hubs, not the laptops directly. See simplified diagram for what I mean.

  

  Will this work? Is it supported? Is it safe, in terms of electrical connections and data connetions?

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• S

  Sabrent Admin Staff

  1/27/25, 3:24 PM

  @Michael Alderete I've asked if this was the case sharing your post and it was affirmed with a 'yes' but if you want to be double sure you can also submit to our technical support where it will get routed to our local testing and verification team.

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  Charlotte12

  10/10/25, 11:09 AM

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