With the SBF crossover, EKF presents a module for CompactPCI serial systems. Among other things, the PCB contains four USB 3.0 controllers and two Gigabit Ethernet NICs, all wired to front connectors. A PCI Express mini card socket can be fitted with a fieldbus I/O module, for example for CAN-FD. According to the supplier, a quad-port UART is useful for communication via RS-232 or RS-485. The module can be operated in any PCI Express peripheral slot of a CompactPCI serial backplane. All I/O modules are connected via a PCIe switch. As the front sockets for USB and Ethernet are each wired to their own controllers, the full data throughput is available on each individual interface. The SBF crossover is intended to be suitable for edge computing, among other things.