Lenovo ThinkServer RD550 - Manual (Page 22)

Power supply
• One or two 550-watt hot-swap redundant power supplies (Universal input and compliant with 80 PLUS
Platinum)
• One or two 750-watt hot-swap redundant power supplies (Universal input and compliant with 80 PLUS
Platinum)
• One or two 750-watt hot-swap redundant power supplies (Universal input and compliant with 80 PLUS
Titanium)
• One or two 1100-watt hot-swap redundant power supplies (Universal input and compliant with 80
PLUS Platinum)
Notes:
• For 550-watt, 750-watt, or 1100-watt Platinum power supply: 90 - 264 V ac
• For 750-watt Titanium power supply: 180 - 264 V ac
System fans
Your server supports up to eight hot-swap system fans with redundancy. This design helps you to avoid
significant cooling problems when a system fan fails. You can replace a hot-swap system fan without
turning off the server.
8 ThinkServer RD550 User Guide and Hardware Maintenance Manual