Asus PCI/I-A486S - Manual (Page 20)

Technical Summary
Temtift$tor Settings
SCSI devices are connected together in a "chain" by cables. In­
ternal devices connect to the PCI-SC200 with a fifty-pin flat ribbon
cable. External devices connect to the external port with a SCSI-2
cable. If there is more than one Internal or external device, additional
devices are connected with cables to form a "daisy chain". The SCSI
chain must be "terminated" at both ends, or the devices in the chain
will not work properly.
Many SCSI devices use a set of terminating resistors to terminate
the device. The PCI-SC200 has "active" termination that you set us­
ing jumper JP5, If you need to terminate the PCI-SC2QQ, you do it by
setting the jumper. The are two settings, terminated and
untenninated, as shown below.
JP 5 : TeniiiiiafDr ieifwiii
Termination
Enabled
(default}
in
CL Termination
Disabled
Decide whether or not you need to terminate the PCI-SC200
based on its position iit tlte SCSI chain. Only the devices at each end
of the chain need to be terminated. If you have
cft / v internal or only
external devices connected to the PCI-SC2ÌX), then you ìjiusì termi­
nate the PCI'SC200. If you have both internal and external devices
connected, you must not terminate tlie card. The figures on the next
page illustrate these requirements.