System information

292 Upgrade and Maintenance Manual RX2520 M1
System board and components
The onboard SAS enabling key enables the SAS functionality of the
Onboard controller.
14.2 Replacing the CMOS battery
Safety notes
V CAUTION!
● The CMOS battery must be replaced with an identical battery or with
a battery type recommended by the manufacturer.
● Keep lithium batteries away from children.
● Do not throw batteries into the trash can. Lithium batteries must be
disposed of in accordance with local regulations concerning special
waste.
● For further safety information, please refer to section "Environmental
protection" in the operating manual of your server.
● Ensure to insert the CMOS battery with the positive pole facing
up!
14.2.1 Preliminary steps
Ê "Locating the defective server" on page 47
Ê "Shutting down the server" on page 49
Ê "Disconnecting power cords" on page 50
Ê "Getting access to the component" on page 51
Upgrade and Repair Unit
(URU)
Hardware: 5 minutes
Tools: tool-less; recommended: tooth pick