As no models of iPad Pro has ever been released with a M3 SoC, you need to be sure that you have correctly identified your iPad Pro.
The fifth generation iPad Pro (M1), sixth generation iPad Pro (M2) and 2024 iPad Pro M4 support Thunderbolt3 / USB4. Unless you have one of these three models of iPad Pro, your iPad will not benefit from using Thunderbolt cables or accessories. If your iPad Pro is one of the models that does support Thunderbolt, you might benefit from the additional performance afforded by this interface type.
Not sure which iPad you have? Identify your iPad model.
You can find information about your iPad directly from iPad settings:
Settings > General > About >
- Model Name
- Model Number (tap to see the generic model number - this has an A-prefix)
If considering a USB-C and/or Thunderbolt hub for your iPad Pro, ensure that its specifications explicitly state compatibility with iPad - as this should ensure that the hub is suitable for use with your iPad. Many reports are seen within the ASC forums of compatibility issues with iPad - these almost always being attributable to using a USB-C hub that is not fully supported by iPadOS.
There are many third-party USB Hubs that are fully compatible with iPad models that feature a USB-C connection. These typically have a USB-C host connection (often using a pigtail connection), plus a USB-C PD (Power Delivery) pass-through power connector to which you can connect your USB-C Power Adapter - along with the hub itself incorporating a combination of additional USB-C ports, USB 2.0/3.1 Type-A ports, Ethernet LAN, HDMI, VGA, SD and microSD card-readers - and in some cases, a 3.5mm analog audio/headphone jack.
Perhaps consider Kingston, Anker, Hyperdrive and Satechi - although there are many others from which to choose. A Google Search for USB-C Hubs compatible with iPad will find a number of articles and recommendations.
If your iPad does not support Thunderbolt, you would be best advised to avoid Thunderbolt hubs. While potentially still usable, they add substantial additional cost - and unnecessary complexity within the connection chain.