Surface Pro 9 TB4 port Video Capability

Hi John W,

Thank you for your question. I reviewed the available public Microsoft documentation and was unable to find an official Microsoft article that explicitly states whether the Surface Pro 9 (Intel) supports a single external display at 4K resolution with a 120 Hz refresh rate.

The closest official reference is Microsoft's Supported external display Surface Pro article, which lists the supported external display resolutions and refresh rates for Surface devices. For Surface Pro 9, the published specifications show support for up to 5120 × 2880 at 60 Hz for a single external display and 3840 × 2160 at 60 Hz in dual-display configurations. The article does not specifically mention a 4K 120 Hz configuration for Surface Pro 9.

As this is a user-to-user support forum, moderators and contributors can only provide guidance based on publicly available Microsoft documentation and do not have access to internal validation resources. For a definitive answer regarding your specific Surface Pro 9 model, monitor, cable or docking setup, I recommend contacting the Surface Support team directly, as they can review your configuration and provide product-specific guidance.

To contact a live Surface Support agent:

1. Go to Contact Microsoft Support and sign in with your Microsoft account.
2. Type "Customer Support" and select Get help.
3. Scroll down and choose Contact support.
4. Under Products and services, select Surface.
5. Under Category, choose your Surface model, then select Confirm.
6. Choose your preferred option:
   • Chat with a support agent in your web browser
   • Provide your phone number and a support agent will call you
   • Submit a repair request

They'll be in a better position to review your specific hardware configuration and provide further guidance.

Hopefully this points you in the right direction.

Best regards.