Are they talking about this https://www.amazon.com/pfSense-SG-2440-pfSense%C2%AE-Security-Appliance/dp/B00JR6X0ZK/ref=sr_1_1?s=electronics&ie=UTF8&qid=1473801108&sr=1-1&keywords=SG2440 then I feel sorry for you having them as a client.

If they were my client, I would let them know that the hardware is not the same as this https://store.pfsense.org/SG-2440/ and that blindly buying from any seller on Amazon is ill advised (caveat emptor).