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SCSI SE High Performance Internal/External I/O Controller (4-1)

Features
SCSI I/O Controller 4-1
Term Power Overload Protection

Features

• Accepts multiple commands per device SCSI chain
• SCSI burst 4.0MB per second (synchronous) SCSI-1 transfer
• SCSI initiator (command issuer)
• SCSI parity support (Ed. IBM standard)
• One adapter per system (Ed. Software issue?)
• Micro Channel Interface
  
  • 4-byte (32-bit) Bus Master
  • Streaming data support (Ed. Good for a SCSI-1 adapter)
  • Address and data parity support
• Interrupt levels 3, 4, 5, 7, 10, 11, 12, 14

SCSI I/O Controller 4-1

ID 8D77, FRU P/N 31G9729, FC 2828

No components on the solder side.

J1 High Availability Jumper

Must be out of the circuit for high availability ("Y") configuration. Put the jumpers over one row only so you don't loose them. There are 13 pairs of pins. You will need a 6 and 7 pair berg jumper (ganged jumper) in order to use this for normal SCSI configuration.

Term Power Overload Protection

The SCSI controller provides term power for the SCSI bus; connect devices to the bus so they do not provide term power. The controller uses a fuse that must be replaced after failure.

Do not connect or disconnect any SCSI device while power is on. Such "hot plugging" is forbidden because this practice may blow the controller fuse, corrupt data or permanently damage SCSI controller chips in controllers or devices.

The fuse on an SCSI controller protects the external and internal SCSI bus. The fuse may be blown by a defective cable, terminator, or device attached to the controller, but not by a defective controller.