158 Upgrade and Maintenance Manual CX2550/60/70 M4
Expansion cards and OCP mezzanine cards
6.6 OCP mezzanine cards
Safety notes
V CAUTION!
● Do not damage or modify internal cables or devices. Doing so may 
cause a device failure, fire, or electric shock. 
● Devices and components inside the server remain hot after 
shutdown. After shutting down the server, wait for hot components to 
cool down before installing or removing internal options. 
● Circuit boards and soldered parts of internal options are exposed and 
can be damaged by static electricity. Always discharge static build-up 
(e.g. by touching a grounded object) before handling electrostatic-
sensitive devices (ESDs). 
● Do not touch the circuitry on boards or soldered parts. Hold circuit 
boards by their metallic areas or edges. 
● If devices are installed or disassembled using methods other than 
those outlined in this chapter, the warranty will be invalidated. 
● Follow the safety instructions in chapter "Important information" on 
page 33.