31 SSATA 2-5 Connector 32 SATA 0-3 Connector
33 SATA 4-7 Connector 34 M.2 Module Connector
35 NCSI Connector
36 Fan 0-7 Error LEDs
37 Fan Board Release Pin
38 Fan 0 Connector
39 Fan 1 Connector 40 Fan 2 Connector
41 Fan 3 Connector 42 Fan Board Connector
43 Fan Board Power Connector 44 Fan 4 Connector
45 Fan 5 Connector 46 Fan 6 Connector
47 Fan 7 Connector
Parts list
Use the parts list to identify each of the components that are available for your server.
The parts are identified as one of the following:
• Tier 1 customer replaceable unit (CRU): Replacement of Tier 1 CRUs is your responsibility. If Lenovo
installs a Tier 1 CRU at your request with no service agreement, you will be charged for the installation.
• Tier 2 customer replaceable unit (CRU): You may install a Tier 2 CRU yourself or request Lenovo to
install it, at no additional charge, under the type of warranty service that is designated for your server.
• Field replaceable unit (FRU): FRUs must be installed only by trained service technicians.
• Consumable and Structural parts: Purchase and replacement of consumable and structural parts is
your responsibility. If Lenovo acquires or installs a structural component at your request, you will be
charged for the service.
For more information about ordering the parts shown in this section, see:
https://datacentersupport.lenovo.com/products/servers/thinksystem/sr645/7d2x/parts
Note: Depending on the model, your server might look slightly different from the illustration.
Chapter 2. Server components 21
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