The main features of the Spider III amplifier can be controlled by connecting an FBV Shortboard MKII.
Q: What type of cables are used with the Line 6 FBV Shortboard MKII?
A: The Line 6 FBV Shortboard MKII uses a standard CAT-5/6 cable with standard RJ-45 ends. These cables are very common in data connection and can be found in most local computer outlets. The FBV controllers ship with a black 25' cable included in the box.
Please see the chart below that details what each switch controls on the Spider III amplifier.