Compatible With: M402dn [HPL4433], M402dne, M402dw [HPL4435], M402n [HPL4431]. NBD = Next Business Day Onsite Repair HP provides next business day, onsite replacement of your failed hardware unit, if the problem can’t be resolved remotely. Offers easy-to-purchase, easy-to-use onsite hardware repair service for your HP product. Increase the return on your HP hardware investments. The longer the service plan you choose, the more reliable support you can expect from HP. Purchasing HP Care Pack service with HP product reduces total cost of ownership. HP Care Pack Services delivered through accredited network of partners or by an HP engineer ensuring the best possible service.