For this question, there are two situations in all. Situation 1: If your package has not been dispatched yet, we can directly help to alter the product information. And you need to provide the relevant alternations by filling below format: Order Number: Orginal Quantities/Colors/Cable Types: Confirmed Quantities/Colors/Cable Types: Situation 2: If your package has been dispatched already, we cannot change the product information. We suggest you to directly contact our customer service after you receive our parcel, we will offer the return address. After we receive the receipt from your returned parcel, we can directly arrange the new parcel to you. For any problem, please contact our dedicated customer service: support@svakom.com