The typical CSKB connector consists of two connectors H1 and H2 which are both from the SAMTEC. Some differences might exist between the pinouts of subsystems from different manufacturers. CubeSat developers must, therefore, be very careful when choosing subsystems and it is up to them to verify the compatibility of these interfaces. It is the responsibility of each system integrator to check potential conflict between pin allocations. For payload power interfacing the main choices need to be considered are the supply voltages required for the design and if the design and if the power should be supplied from an always-on line or a line with a serial power switch on the EPS. In this case, the payload or subsystem may be powered on or off by sending the corresponding commands to the EPS. The current rating per pin on the connectors is 3A.