IBM ThinkCentre 8171 Replacement Manual page 8

v Before you replace a new CRU, touch the static-protective package containing
v When possible, remove the new CRU from the static-protective packaging, and
v Do not place the CRU on the computer cover or other metal surface.
vi
Hardware Removal and Replacement Guide
the CRU to a metal expansion-slot cover or other unpainted metal surface on the
computer for at least two seconds. This reduces static electricity in the package
and your body.
install it directly in the computer without setting the CRU down. When this is
not possible, place the static-protective package that the CRU came in on a
smooth, level surface and place the CRU on it.