Question about Samsung Galaxy Tab S9 Ultra

I don't use a mouse, but they should all work with Bluetooth.

Hello, I don't use a mouse when I use the tablet, so I can't help you. I'm sorry! Best regards

I have tried my Logi MX Anywhere 2S. It works. The interface must be via Bluetooth so that the tablet can be paired.
Please also look for other suitable mouse devices that can support the Bluetooth interface.

It doesn't matter as long as it's Bluetooth

It's best to use a Bluetooth mouse, regardless of the manufacturer, I have the Logi MX Anywhere 3