It looks like you're asking how to check if your supports HDMI Alt Mode (connecting to an external display via USB-C).
Here’s a clear, step-by-step guide to verify this: As of my knowledge cutoff (May 2025), the Xiaomi Pad 7 Pro does NOT support HDMI Alt Mode. Most Xiaomi tablets (including Pad 6 series) lack video output over USB-C. They only support USB 2.0 speed data and charging, not DisplayPort/HDMI Alt Mode. It looks like you're asking how to check