Lenovo System x3300 M4 Installation And Service Manual page 56

2. You can order the one additional fan for redundant cooling.
3. When more than 2 PCI-e adapters have been installed on the system, it is necessary to follow the
fan configuration instruction as the table below.
Table 5. Fan configuration instruction
Fans Conditions
2 and Standard for all systems
Rear
fan
3 a. When the second microprocessor is populated, the fan is included in the second
microprocessor kit, P/N: 00D2581 ~ 00D2589. Or,
b. When more than 2 PCI-e adapters have been installed on the system, the fan (P/N:
00D2593) must also be populated. Or,
c. When Lenovo 1.2TB/785GB/365GB High IOPS MLC Mono adapters have been
installed on the system, the fan (P/N: 00D2593) must also be populated.
1 Optional redundant fan (P/N: 00D2593)
Attention: When fan 3 is installed and 16 GB 1.5V / 32 GB 1.35V DIMMs are installed,
fan 1 must also be populated.
To install a simple-swap fan, complete the following steps:
1. Read the safety information that begins on page "Safety" on page v and "Installation guidelines" on
page 34.
2. Turn off the server (see "Turning off the server" on page 24) and all attached peripheral devices.
Disconnect all power cords; then, disconnect all external cables as necessary to replace the device.
3. Carefully turn the server on its side so that it is lying flat, with the cover facing up.
Attention: Do not allow the server to fall over.
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System x3300 M4 Installation and Service Guide