This image shows the Auth page, under SSH, in the PuTTY Configuration dialog box, labeled Options controlling SSH authentication.

On the left is a navigation tree labeled Category.

There are options for Bypass authentication entirely (SSH-2 only), and Display pre-authentication banner (SSH-2 only), which is selected.

Under Authentication methods, there are three options:
Attempt authentication using Pageant, which is selected.
Attempt TIS or CryptoCard auth (SSH-1), which is not selected.
Attempt "keyboard-interactive" auth (SSH-2), which is selected.

Under Authentication parameters, there are options for Allow agent forwarding and Allow attempted changes of username in SSH-2. Neither is selected.

The field Private key file for authentication, which is surrounded by a red border, has a sample key C:\temp\rsa-key-psft.ppk.
There is also a Browse button.

At the bottom there are buttons for About, Help, Open, and Cancel.