The Samsung Galaxy Note 9 can receive files from a computer through several methods. The easiest approach is connecting via USB cable: plug your Note 9 into your computer with a USB-C cable, swipe down from the top of your phone's screen, tap the USB connection notification, and select "File Transfer" or "MTP" mode. Your phone will then appear as a drive on your computer, and you can drag and drop files into folders like Pictures, Documents, or Downloads.
Alternatively, use cloud storage services like Google Drive, OneDrive, or Dropbox: upload files from your computer to the cloud, then download them on your Note 9 through the respective app. This works wirelessly without cables.
For wireless transfer without cloud services, enable Bluetooth on both devices, pair them, and use your computer's file manager to send files via Bluetooth—though this is slower for large files.
Another option is email: attach files to an email on your computer and access them from the Gmail app on your Note 9.
If your Note 9 doesn't appear when connected via USB, ensure you've installed Samsung Smart Switch or the correct USB drivers on your computer. Most modern Windows and Mac systems recognize the device automatically. You can also use Samsung's Smart Switch software itself to transfer files, contacts, and apps in bulk from your computer to the phone.