Adaptec AHA-2742T User Manual - Page 45

Connecting a Second Internal SCSI Device

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AHA-2740 Series User's Manual 3 To connect a second internal SCSI device, plug the middle connector of the SCSI ribbon cable to the connector on the second internal SCSI device, as shown in Figure 2-8. PIN 1 COLORED STRIPE INTERNAL SCSI DEVICE TO 1ST INTERNAL SCSI DRIVE TO HOST ADAPTER Figure 2-8. Connecting a Second Internal SCSI Device 4 To connect three or more internal SCSI devices to a SCSI bus, obtain a 50-pin SCSI ribbon cable with enough connectors to accommodate all of your internal SCSI devices. Connecting External SCSI Devices The external connector for SCSI Channel A uses a 50-pin shielded cable with a high-density external connector. External cable connectors are keyed and can only be plugged-in one way; Pin 1 orientation is automatic. To connect external SCSI devices: ® 1 Connect one end of the external cable to the host adapter external connector, as shown in Figure 2-9. 2-18 Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. C (Page 2-18) Print Spec Number: 491709-00 Rev C Current Date: 9/1/93 ECN Date: 9/14/93

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3
To connect a second internal SCSI device, plug the middle
connector of the SCSI ribbon cable to the connector on the
second internal SCSI device, as shown in Figure 2-8.
4
To connect three or more internal SCSI devices to a SCSI bus,
obtain a 50-pin SCSI ribbon cable with enough connectors to
accommodate all of your internal SCSI devices.
Connecting External SCSI Devices
The external connector for SCSI Channel A uses a 50-pin
shielded cable with a high-density external connector. External
cable connectors are keyed and can only be plugged-in one way;
Pin 1 orientation is automatic.
To connect external SCSI devices:
1
Connect one end of the external cable to the host adapter
external connector, as shown in Figure 2-9.
PIN 1
INTERNAL
SCSI DEVICE
COLORED
STRIPE
TO 1ST INTERNAL
SCSI DRIVE
TO HOST
ADAPTER
Figure 2-8.
Connecting a Second Internal SCSI Device
Adaptec AHA-2740 Series User’s Manual
Stock Number:
510381-00
/
Rev. C
(Page 2-18)
Print Spec Number:
491709-00 Rev C
Current Date:
9/1/93
ECN Date:
9/14/93
AHA-2740 Series User’s Manual
2-18