Dell Storage MD1420 Enclosures Hardware Owner's Manual

WARNING: : For equipment using –(48–60) V DC power supplies, a qualified electrician must perform all connections to DC power and to safety grounds. Do not attempt connecting to DC power or installing grounds yourself .All electrical wiring must comply with applicable local or national codes and practices. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow all safety instructions that came with the product.

CAUTION: : The system requires one power supply for normal operation. On power-redundant systems, remove and replace one power supply at a time when a system is turned on.

NOTE: : You must unlatch and lift the optional cable management arm if it interferes with power supply removal. For information about the cable management arm, see the system’s rack documentation.