Why doesn't anybody make a USB-C to multiple USB-C hub?

There are USB-C hubs that provide multiple USB-C ports, but they are surprisingly rare compared to USB-C hubs that primarily break out into USB-A, HDMI, Ethernet, and other ports.

The main reasons why USB-C-to-multiple-USB-C hubs are uncommon boil down to technical, power, and economic limitations:

1️⃣ Bandwidth & Protocol Limitations

• A single USB-C port can support USB 3.2, Thunderbolt 3/4, DisplayPort, and Power Delivery (PD) — but it doesn’t have infinite bandwidth.
• For example:

         USB 3.2 Gen 2 = 10 Gbps

         Thunderbolt 3/4 = 40 Gbps

• If you try to split that into multiple fully functional USB-C outputs (especially for data + video + charging), each additional port reduces available bandwidth.
• Properly managing this requires expensive active Thunderbolt controllers, not just a simple passive splitter.

2️⃣ Power Delivery (PD) Complexity

• USB-C ports often handle power delivery (charging laptops, phones, or peripherals).
• Splitting a single USB-C PD input into multiple outputs means:

  • Negotiating different voltages (5V, 9V, 15V, 20V) for different devices simultaneously

  • Managing current limits safely

• That requires complex and costly PD controller chips.
• Cheaper hubs avoid this by focusing on just one PD passthrough port.

3️⃣ Market Demand

• Most users buying hubs want legacy ports (USB-A, HDMI, SD card, Ethernet) for accessories and monitors, not more USB-C ports.
• Devices that already have multiple USB-C ports (MacBook Pros, XPS, high-end ThinkPads) reduce the need for such hubs.
• Niche demand means fewer manufacturers are willing to design and mass-produce them.

4️⃣ Signal Integrity and Heat Issues

• Running multiple high-speed USB 3.2 or Thunderbolt lanes through a small hub causes:

  • Signal degradation (especially with longer cables)

  • EMI (electromagnetic interference)

  • Heat buildup when multiple devices are active

• This requires premium PCB design and materials, raising costs even more. 

5️⃣ Existing Alternatives

If you need multiple USB-C ports, there are solutions, but usually in the form of:

• Thunderbolt docks – e.g., CalDigit TS4, OWC Thunderbolt Hub, Anker Apex Thunderbolt Dock — these give you extra USB-C (and Thunderbolt) ports but cost $200–$400.
• USB-C duplicators — some hubs provide one extra USB-C data port, but usually limited to USB 2.0 speeds or shared bandwidth.
• PCIe docking stations — more common in professional setups, not for casual users.

Bottom line

It’s not that no one thought of it — it’s that true multi-USB-C hubs that maintain full data speed, PD negotiation, and video support are technically challenging, more expensive to build, and have less mainstream demand compared to standard multiport hubs.