content: I ordered a DI-624 from Amazon by way of 3BTECH. They sent the wrong Router which was an upgrade a DI-624M. But I used the DI-624 on my system and there is a difference in the speed. 3BTECH told me they where the same but if you read the manual they are not. They would not take it back without me paying a shipping charge and restocking fee. Don't deal with 3BTECH because Amazon will not back them up and you don't get the same service like when you deal with Amazon. Stay away from this 3rd party company. You can only contact them by way of e-mail.