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1. Remove the safety cap from the module and pull the locking lever into the down
2. Insert the QSFP28 module into the switch QSFP28 port until it clicks into place. Use
3. Pull up the locking lever to lock the module into place.
4. Connect the fiber‐optic cable.
Connecting a Fiber Optic Cable
1. Remove the protective caps from the end of the fiber optic cable.
2. Gently slide the fiber optic cable into the QSFP28 module until it clicks into place.
3. Check the LEDs on the switch. When the switch is operating correctly, the green
28
Lenovo ThinkSystem NE2552E Flex Switch: Installation Guide
Note: To avoid damage to the cable or the QSFP28 module, do not connect the
cable before the QSFP28 module is installed in the switch port.
(unlocked) position.
minimal pressure when you insert the module into the port. Do not use excessive
force when you insert the module; you can damage the module or the QSFP28 port.
The module has a mechanical guide key to prevent you from inserting the
module incorrectly.
Attention: To avoid damage to the fiber optic cables, follow these guidelines:
Do not route the cable along a folding cable‐management arm.
When you attach the cable to a device on slide rails, leave enough slack in the
cable so that it does not bend to a radius of less than 38 mm (1.5 in.) when the
device is extended or become pinched when the device is retracted.
Route the cable away from places where it can be snagged by other devices in
the rack.
Do not overtighten the cable straps or bend the cables to a radius of less than 38
mm (1.5 in.).
Do not put excess weight on the cable at the connection point. Make sure that the
cable is well supported.
To connect the fiber optic cable to the QSFP28 module, complete the following
steps.
link LED is lit. For information about the status of the switch LEDs, see "Locating
the Information Panels, LEDs, and External Ports" on page
Fiber-optic
cable
Protective cap
32.
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