1. Go to Core
  2. Content > Additional Content Types 
  3. Click the Links category > Search for and click the item name to edit
  4. Click the pencil icon 
  5. Mark the Delete option next to Photo 
  6. Click Save
  7. Click Edit back into the Links Item
  8. Click + Add Photo next to the word Photo
  9. Select the image your computer file
  10. A hover photo can also be added by clicking the + Add Photo button next to Hover Photo, which will change the link image to this selected image when a user hovers their mouse pointer over it
  11. Click Save