A riser card inside an IBMPS/2, featuring MCA slotsMotherboard of an IBM PS/ValuePoint personal computer model (c. from 1993 to 1995) with an Intel i486SX microprocessor, with an elongated connector (black, horizontally in the middle/left between upper and lower edge) for the riser card on which the ISA bus slots were located
A riser card is a printed circuit board that gives a computer motherboard the option for additional expansion cards to be added to the computer.[1]