IBM 8681 Hardware Maintenance Manual - Page 82

Wide Ultra-2 SCSI LVD ports, Wide Ultra-2 SCSI LVD bus-master controllers on the I/O

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6 4 2 5 3 1 The following table shows the pin-number assignments for the connectors used by the keyboard and auxiliary-device ports. Table 7. Keyboard and auxiliary-device port pin-number assignments Pin Signal 1 Data 2 Not connected 3 Ground 4 +5 V DC 5 Clock 6 Not connected Wide Ultra-2 SCSI (LVD) ports: The server has two Wide Ultra-2 SCSI (LVD) bus-master controllers on the I/O function card; one supports internal devices and the other is connected to an external connector for support of external devices. Each controller supports up to 15 SCSI devices. You can use the 68-pin SCSI connectors for these controllers to expand the capabilities of the server by attaching different types of SCSI devices, such as drives or printers. Table 8 on page 75 shows the pin-number assignments for the 68-pin SCSI connectors. 74 Netfinity Server HMM

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6
4
2
1
3
5
The following table shows the pin-number assignments for
the connectors used by the keyboard and auxiliary-device
ports.
Wide Ultra-2 SCSI (LVD) ports:
The server has two
Wide Ultra-2 SCSI (LVD) bus-master controllers on the I/O
function card; one supports internal devices and the other
is connected to an external connector for support of
external devices.
Each controller supports up to 15 SCSI
devices.
You can use the 68-pin SCSI connectors for
these controllers to expand the capabilities of the server by
attaching different types of SCSI devices, such as drives or
printers.
Table
8 on page
75 shows the pin-number assignments
for the 68-pin SCSI connectors.
Table 7. Keyboard and auxiliary-device port
pin-number assignments
Pin
Signal
1
Data
2
Not connected
3
Ground
4
+
5 V DC
5
Clock
6
Not connected
74
Netfinity Server HMM