JMR electronic Fortra 5251F6 - Manual (Page 18)

CH 3 (Top)
This is a standard (2Gb/s) SFP transceiver connector used to connect to a drive
expansion enclosure for Loop B side of drives. The 15 internal drives loop side B
are connected to this loop as well.
CH 4
This is a standard (2Gb/s) SFP transceiver connector used to connect to a host
system or drive expansion bay. Host or disk connection is firmware selectable.
CH 5
This is a standard (2Gb/s) SFP transceiver connector used to connect to a host
system or drive expansion bay. Host or disk connection is firmware selectable.
RS232 Controller 0
RS232 Serial Connection to the 5251F6 controller 0.
RS232 Controller 1
RS232 Serial Connection to the 5251F6 controller 1.
4-5
FORTRA
 15-bay I6 Infortrend 5251F6 Installation Guide Rev A