It comprises 2,3,or 4 cards depending on the configuration required. In its basic form, switching is accomplished manually.
Options allow for serial switching, and differential common port.
The SCSI Matrix Switch is a high performance SCSI switch configured as an X-Y matrix. With X host ports and Y drive ports the switch operates several concurrent paths simultaneously. The switch may be controlled by manual switching or by software via 2 remote RS232 compatible serial links.