3. HARDWARE SETUP 20. SMBus Connector (3-pin SMB) (optional/reserved) This connector allows you to connect SMBus devices. SMBus devices commu- nicate by means of the SMBus with an SMBus host and/or other SMBus de- vices. The SMBus or System Management Bus is a specific implementation of an I 2 C bus, which is a multi-master bus, that is, multiple chips can be connected to the same bus and each one can act as a master by initiating data transfer. PARALLEL PORT SMBCLK Ground SMBDATA +5V 1 SMB Connectors 3. H/W SETUP P3C-LS/L/S SMBus Connector 21.
Ultra-Fast (50-pin)/Ultra2 (68-pin) SCSI Connectors only with SCSI models This motherboard has an onboard 50-Pin Ultra-Fast SCSI connector for 8-bit SCSI devices and two 68-Pin Ultra2 SCSI connectors for Low Voltage Devices (LVD) and 32-bit Ultra-Wide SCSI devices. 35 68 34 1 68-Pin Ultra160 SCSI Connector 1 50-Pin Ultra-Fast SCSI Connector 35 1 68 34 68-Pin Wide SCSI Connector P3C-LS/L/S Onboard SCSI Connectors IMPORTANT: Read the SCSI connection and termination information on the next page. 50 ASUS P3C-L / P3C-S / P3C-LS User’s Manual OPTIONAL 1234 P3C-LS / L / S P3C-LS / L / S