The Advanced Series uses an more powerful architectural design with a 400MHz on-board PowerPC. A standard off-the-shelf Physical Layer chip connects to a highly optimized FPGA which not only acts as a Link layer but also incorporates the data recording functionality, Trigger and Filter engines as well as the Data Monitor. Recorded data is directly captured into onboard memory of 512MB (1GB for the FS850/FS450b).

The user can easily connect the analyzer to his PC (laptop) via a USB2.0 or Ethernet connection. All data transfer to the PC is offline, so there is no potential for the loss of data.

FireSpys from the Advanced Series are also available in PCI (FSx50y)configuration.