Transfer assets from another network
Transferring assets to the wallet you connected to Affine is from another Polygon address is easy. You can simply do so by finding the Affine-connected wallet in your account or deposit page. From there, be sure to send your assets using that address.
Alternatively, if you have another wallet that currently holds you assets, you can connect that wallet to Affine instead.
Transferring assets from another network (eg. Ethereum) is more complex, requiring you to bridge your assets. DeFi Pulse provides a very helpful document explaining how to do so depending on which network your wallet is on.