This section describes the prerequisites a user must be aware of before using the testhead OAM tool. It is divided into three sections. First, the generic prerequisites applicable to all 7210 SAS platforms are listed, followed by prerequisites specific to the 7210 SAS-D and 7210 SAS-Dxp platforms, and then followed by prerequisites specific to the 7210 SAS-K 2F1C2T, 7210 SAS-K 2F6C4T, and 7210 SAS-K 3SFP+ 8C.