The NT200A01 SmartNIC has 4 time synchronization connectors. The external SMA connector and the internal connectors (Ext1, Int1 and Int2) can be configured separately for input or output (see Configuring the Time Synchronization Connectors and the Time Synchronization Time and Frequency Reference Priorities). The robust SMA connector ensures a more secure interface connection. The external RJ45 connector is used for PTP slave synchronization. This figure shows an NT200A01 SmartNIC and the location of its time synchronization connectors.