Each kit contains the required parts to demonstrate and test circuits. The 9402 and 9404 Series kits come with a PCB test board fitted with a pre-installed vertical header and eight SMA connectors to enable immediate testing. The SMA connectors are screwed down to the board to provide a compression connection, which allows the end user the flexibility to easily replace or move the connection to different test locations if desired. If more channels are needed, additional connectors can be ordered. The 9401 and 9403 Series kits do not include a PCB test board, but include a 2 row x 25 position latch/eject header for assembly.