3
AHA-
2
9
1
0
Bi
I
n
st
a
ll
at
io
n
Gu
id
e
Pa
rt
N
u
m
b
er
: 511
337-
00
, Rev
. A
P
ag
e 3 of
1
2
Pr
in
t Spe
c
N
u
m
b
er
:
49
596
9-0
0
Cur
re
n
t D
ate
:
10/
4/
96
La
st
M
odi
fi
ed
: O
c
tobe
r 4,
1996
1
2
:4
8 pm
Fi
le
Lo
ca
ti
on:
d:
\m
ar
io
\a
ha
291
0b\
291
0bi
.f
m
ECN Da
te
:
1
0
/8
/9
6
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Step 5:
Make sure that all SCSI devices have
unique SCSI ID’s from 0 to 6. (Refer to your device
documentation for SCSI ID settings and instructions
on manually changing the default settings.)
Caution:
AHA-2910Bi host adapters support
only single-ended SCSI devices. Differential SCSI
devices may be damaged if you connect them to
the host adapter. Most SCSI devices are single-
ended. Read the device documentation.
Step 6:
Install or enable terminators on the device
that you plan to install at the end of the internal cable.
Then remove or disable terminators on all remaining
devices. However, never terminate more than two
devices on the SCSI bus. The AHA-2910Bi detects
installed SCSI devices on the bus and sets its own
termination automatically.
WARNING:
If you decide to attach your host
adapter between two terminating SCSI devices
on the internal SCSI connector, you must disable
host adapter SCSI termination using the
SCSISelect utility that comes with the
AHA-2910Bi product.
On most internal SCSI devices, you control termination
by setting a jumper or a switch, or by physically remov-
ing or installing a resistor module(s).
Refer to the device’s documentation to determine how to
enable or disable termination on your particular device.
Step 7:
Install and mount each internal SCSI device
inside your computer. (Refer to your computer and
device documentation for instructions.)
If you purchased your AHA-2910Bi as part of an
Adaptec kit, the kit includes one 50-pin internal SCSI
cable that allows you to connect up to two internal SCSI
devices.
Step 8:
Plug one end of your 50-pin internal SCSI
cable into the host adapter’s internal SCSI connector.
To connect more than two internal devices, use a
SCSI cable with enough connectors to accommodate
all of your devices.
Termination
Disabled
Termination
Enabled