The IBOB features two Z-DOK connectors, to which a variety of I/O boards can be attached (including dual 1GSa/sec ADC, quad 250MSa/sec ADC and DAC). The IBOB has a Xilinx Virtex-II Pro 2VP50 FPGA, and is used in radio astronomy applications primarily for digitizing data, performing down conversion, filtering and FFT operations, and outputting this data over XAUI/10GbE, enabled by two CX4 connectors on the board. It can be used to provide a high-speed interface to BEE2 boards.