You can fund your investment via ACH transfer or wire. However, you must have a US bank account in order to fund your investment via ACH transfer. We recommend choosing ACH when possible.
You have a Funding Account on AngelList that is home to all of your funds and transactions (angel.co/invest/accounts). Each time you close an investment, you'll have the option to choose between ACH and wire.
You can add a bank account at any time on your Funding Accounts page by clicking the "Add Bank Account" button. You can also transfer funds into your account, agnostic of an investment using the "Transfer Funds" button.