Handling Static-Sensitive Devices; Cabling Guidelines - Lenovo ThinkSystem NE2572 Installation Manual

Handling Static-Sensitive Devices

Cabling Guidelines

36
NE2572 Installation Guide
Attention: Static electricity can damage the switch and other electronic devices. To
avoid damage, keep static-sensitive devices in their static-protective packages until
you are ready to install them.
To reduce the possibility of electrostatic discharge, observe the following
precautions:
Limit your movement. Movement can cause static electricity to build up around

you.
 The use of a grounding system is recommended. For example, wear an
electrostatic-discharge wrist strap, if one is available.
 Handle the device carefully, holding it by its edges or its frame.
Do not touch solder joints, pins, or exposed printed circuitry.

 Do not leave the device where others can handle and damage it.
 While the device is still in its static-protective package, touch it to an unpainted
metal part of any unpainted metal surface on a grounded rack component in the
rack in which you are installing the device, for at least 2 seconds. This drains
static electricity from the package and from your body.
 Remove the device from its package and install it directly into the switch
without setting it down. If it is necessary to set down the device, put it back into
its static-protective package. Do not place the device on a switch cover or on a
metal surface.
 Take additional care when you handle devices during cold weather. Heating
reduces indoor humidity and increases static electricity.
Make sure that all connection cables comply with the following recommendations:
 Make sure that the cables and cabling components comply with industry
standards.
 Dress and affix cables to the rack to minimize the stress on the I/O connectors,
connector cages, and cables. If possible, use horizontal and vertical cable
managers to minimize obstruction of the airflow and other equipment.
 Use wide Velcro straps to reduce pressure points.
 Position large or heavy cable bundles under other cable bundles to prevent
crushing or stress. Over-bundling, or placing multiple bundles on top of each
other, can degrade performance.
 Make sure that the radius of any bend does not exceed the vendor
recommended minimum bend radius.
 Do not stress cables and connectors by applying additional twists, tension
beyond load ratings, stapling, or applying nylon tie-wraps with a tie-wrap
puller.