This is the "Synchronizer" template. It should be called in the following format:

{{Synchronizer
|BB Synchronizer Synchronizer=
|BB Synchronizer In 1=
|BB Synchronizer In 2=
|BB Synchronizer In 3=
|BB Synchronizer In 4=
|BB Synchronizer Out 1=
|BB Synchronizer Out 2=
|BB Synchronizer Out 3=
|BB Synchronizer Out 4=
}}

Edit the page to see the template text.