Power supply
Power-supply handle
Power-supply
release tab
4.
Grasp
the
handle
on
the
rear
of
the
power
supply
and
slide
the
power
supply
forward
into
the
power-supply
bay
until
it
clicks.
Make
sure
that
the
power
supply
connects
firmly
into
the
power-supply
backplane.
5.
Connect
the
power
cord
for
the
new
power
supply
to
the
power-cord
connector
on
the
power
supply.
6.
Connect
the
other
end
of
the
power
cord
to
a
properly
grounded
electrical
outlet.
7.
Make
sure
that
the
ac
power
LED
and
the
dc
power
LED
on
the
power
supply
are
lit,
indicating
that
the
power
supply
is
operating
correctly.
The
two
green
LEDs
are
to
the
right
of
the
power-cord
connector.
If
you
have
other
options
to
install
or
remove,
do
so
now.
Otherwise,
go
to
Installing
a
Y
power
cable
A
Y
power
cable
comes
with
the
power-supply
option.
Cable
the
servers
as
shown
in
the
illustration
to
ensure
server
redundancy.
Use
one
Y
power
cable
to
provide
power
to
two
servers.
Each
Y
power
cable
must
be
connected
to
a
different
power
source,
such
as
a
power
distribution
unit
(PDU),
to
maintain
redundancy.
Cable-management arm
Cable-management arm
Y cable A
Y cable B
Installing
a
hard
disk
drive
Locate
the
documentation
that
comes
with
the
hard
disk
drive
and
follow
those
instructions
in
addition
to
the
instructions
in
this
chapter.
Note:
Do
not
mix
SAS
hard
disk
drives
with
SATA
hard
disk
drives.
30
IBM
System
x3550
Type
7978:
User’s
Guide
Summary of Contents for 3550 Type 7978
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