Discover Financial Services is a direct banking and payment services company with one of the most recognised brands in U.S. financial services. For more information, visit www.discover.com/company.

Here's how to do it:

    1. Click Configure
    2. Select Merchants > Edit
    3. Click 'Card Details / Surcharges' Tab
    4. Tick 'Discover'
    5. Click 'Save'

Note:

There is a 3% Surcharge for Discover.