The GE IS215UCVEH2AF VME Controller Board is a component of the Mark VI Speedtronic control system from General Electric, designed for use in industrial gas and steam turbine systems. It functions as a single-slot VME board equipped with a high-speed processor, DRAM, a cache, and flash memory. The board also includes two serial RS-232C ports and an Ethernet port, making it versatile for managing and controlling a variety of turbine systems. It is typically used in the second slot of a Mark VI I/O rack, where there are no J3 or J4 connectors. The base software on this board supports land and marine aero-derivative products as well as more typical steam and gas systems.

The IS215UCVEH2AF board is designed to live within the VMEbus rack system, which can be either a 13- or 21-slot rack. The board's rear edge features two backplane connectors for integration into the rack system. It is populated with various components, including resistors, capacitors, diodes, and connectors. A large protective shield covers one side of the board, potentially serving as a heat sink. The board is also built with a conformal coating, which is common in industrial applications to protect against environmental factors and improve the board's reliability.