24
Lenovo ThinkSystem NE2552E Flex Switch: Installation Guide
SFP28 Ports
The
switch
SFP28
ports
accept
both
SFP+
and
SFP28
modules
that
provide
two
fiber
‐
optic
cable
connectors
for
connecting
to
external
devices.
Installing an SFP+ or SFP28 Module
To
install
an
SFP+
or
SFP28
module,
complete
the
following
steps.
1.
Read
the
safety
information
that
begins
on
and
2.
If
you
have
not
already
done
so,
touch
the
static
‐
protective
package
that
contains
the
SFP+
or
SFP28
module
to
an
unpainted
metal
surface
of
the
Lenovo
Flex
System
chassis
or
an
unpainted
metal
surface
on
any
other
grounded
rack
component
in
the
rack
in
which
you
are
installing
the
switch
for
at
least
2
seconds.
3.
Read
the
information
in
4.
Remove
the
SFP+
or
SFP28
module
from
its
static
‐
protective
package.
5.
If
a
protective
cap
is
installed
in
the
switch
SFP28
port
where
you
are
installing
the
SFP+
or
SFP28
module,
remove
the
cap
and
store
it
in
a
safe
place.
6.
Remove
the
protective
cap
from
the
SFP+
or
SFP28
module
and
store
it
in
a
safe
place.
Attention:
To
avoid
damage
to
the
cable
or
the
SFP+
or
SFP28
module,
make
sure
that
you
do
not
connect
the
fiber
optic
cable
before
the
SFP+
or
SFP28
module
is
installed
in
the
switch
port.
7.
Insert
the
SFP28
or
SFP+
module
into
the
switch
SFP28
port
until
it
clicks
into
place.
8.
Connect
the
fiber
optic
cable
(see
and
any
cables
that
you
disconnected
earlier.
SFP28 port
SFP+ or SFP28 module
Protective cap
