IBM 8682 manual Auxiliary-device pointing device port, Ultra160 SCSI ports

Table 15. Keyboard connector pin-number assignments

Pin	I/O	Signal
1	I/O	Data
2	N/A	Reserved
3	N/A	Ground
4	N/A	+5 V dc
5	I/O	Keyboard clock
6	N/A	Reserved

Auxiliary-device (pointing device) port

The system board has one auxiliary-device port that supports a mouse or other pointing device.

The following table shows the pin-number assignments for the auxiliary-device connector on the rear of the server.

65

43

2 1

Table 16. Auxiliary-device connector pin-number assignments

Pin Signal

1Data

2Not connected

3Ground

4+5 V dc

5Clock

6Not connected

Ultra160 SCSI ports

The server has an integrated dual-channel Ultra160 small computer system interface (SCSI) controller. This controller supports two independent Ultra 160/m SCSI channels: one internal and one external. Each of these channels supports up to 15 SCSI devices. In addition, this controller uses:

vDouble-transition clocking to achieve high transfer rates

vDomain name validation to negotiate compatible data transfer speeds with each device

vCyclic-redundancy checking (CRC), instead of the usual parity checking, to significantly improve data reliability

vAn active terminator on the system board for SCSI bus termination

The server comes with two SCSI cables. One cable connects the internal SCSI channel connector to the standard hot-swap-drive backplane. The other cable is not connected to the server when the server is shipped and must be installed in the server. If you want to use the external LVD SCSI channel connector to connect external SCSI devices to the server, remove the knockout on the rear of the server and install the LVD SCSI cable that comes with the server.

Installing options 79