IBM System x3650 M3 4255 - SAS Riser-Card Connectors and Leds

SAS riser-card connectors and LEDs
The following illustrations show the connectors and LEDs on the SAS riser cards.
Note: Error LEDs remain lit only while the server is connected to power.
A 12-drive-capable model server contains the riser card that is shown in the
following illustration.
USB hypervisor
connector
PCI Express SAS
controller connector
SAS controller
error LED
SAS riser
card
A tape-enabled model server contains the riser card that is shown in the following
illustration.
USB hypervisor
connector
USB
tape
signal
PCI Express SAS
controller connector
SATA tape signal
Tape drive
power
SAS controller
error LED
SAS riser card
(tape-enabled model server)
24 IBM System x3650 M3 Types 4255, 7945, and 7949: Problem Determination and Service Guide