IBM 86655RY Hardware Maintenance Manual - Page 95

Table 12. Keyboard connector pin-number assignments . Pin I/O 1 I/O 2 N/A 3 N/A 4 N/A 5 I/O 6 N/A Data Reserved Ground +5 V dc Keyboard clock Reserved Signal Auxiliary-device (pointing device) port The I/O 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. 6 4 2 5 3 1 Table 13. Auxiliary-device connector pin-number assignments . Pin 1 2 3 4 5 6 Data Not connected Ground +5 V dc Clock Not connected Signal Ultra2 SCSI ports The server comes with an IBM ServeRAID controller. This controller provides three independent SCSI channels. A 16-bit (wide) LVD SCSI cable connects the hard disk drive backplane to one channel of the RAID controller. Two 68-pin SCSI connectors for two additional channels are on the rear of the server. Refer to "Chapter . Installing and configuring ServeRAID controllers," on page 139. The server has a dual-channel Ultra-2 small computer system interface (SCSI) controller. This controller supports two independent SCSI channels: one external and one internal. Each of these channels supports up to 15 SCSI devices. You can use the external LVD SCSI channel connector, on the rear of the server, to connect different types of SCSI devices, such as drives or printers. Installing options 85