– Two Ethernet connectors
– Two USB 3.0 connectors
– Four USB 2.0 connectors
System fans
• One processor: two fans (fan 1 and 2) or three fans (fan 1, 2, and 4)
• Two processors: three fans (fan 1, 2, and 3) or four fans (fan 1, 2, 3, and 4)
Notes:
• Fan 3 is required if the expansion drive cage is installed.
• Fan 4 is optional and is the redundant fan.
• If your server comes with only one processor, two or three system fans are adequate to provide proper
cooling. However, you must keep the location for fan 3 occupied by a fan filler to ensure proper airflow.
Power supplies
• One fixed 450-watt power supply
• One or two hot-swap power supplies for redundancy support
– 550-watt ac 80 PLUS Platinum
– 750-watt ac 80 PLUS Platinum
– 750-watt ac 80 PLUS Titanium
– 1100-watt ac 80 PLUS Platinum
Electrical input
• ac input (50 Hz to 60 Hz) required
– Input voltage low range:
– Minimum: 100 V ac
– Maximum: 127 V ac
– Input voltage high range:
– Minimum: 200 V ac
– Maximum: 240 V ac
Note: For server models with 750-watt ac 80 PLUS Titanium power supplies, the 100 V –127 V ac input
voltage is not supported.
CAUTION:
240 V dc input (input range: 180-300 V dc) is supported in Chinese Mainland ONLY. Power supply with
240 V dc input cannot support hot plugging power cord function. Before removing the power supply
with dc input, please turn off server or disconnect dc power sources at the breaker panel or by turning
off the power source. Then, remove the power cord.
Minimal configuration for debugging
• One processor in processor socket 1
• One memory DIMM on slot 3
• One power supply
• Two system fans (fan 1 and 2)
10
ThinkSystem ST550 Setup Guide
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