The 9 pin Breakout Box (BOB) allows for ease of access to and testing of proper pin locations for 250k & 500k datalinks for J1939 vehicles.  

The 9 pin breakout-box is a great accessory to the PicoScope. It makes connecting the Pico to two datalinks and 12v power fast and easy and it allows connection of a diagnostic cable to the 9 pin possible at the same time