At a machine with a GVB top card you can

• Pick up or buy products (such as Randstad Noord season ticket)
• Load free night bus product (with this you can pay with balance in the night bus)
• Load balance 
• check and print card data
• Load your webshop order your chipcard
• Pick up a student product

The machine explained

A  Selection panel    B  Insert OV-chipkaart.  C  Insert bank card   D  Numeric keyboard. E  Tansaction receipt slot.