USBFS (full speed) on all Synergy devices. On all S7 kits, the device interrupt is hard wired to the USBFS controller, so you need to enable the USBFS interrupt.
If you are using a host stack,(like the HID mass storage function), you should enable the USBHS interrupt.
All other settings can be left as defaults. On the S1 you can set memory to just 4K since it is running a smaller version of the USB stack (since host mode is not supported).