Microprocessor

One or two Intel® Xeon® microprocessors (internal cache size varies by model)

For a list of the ThinkServer microprocessor options, go to:

http://www.lenovo.com/thinkserver

Memory

Your server has 20 memory slots. For more information, see “Memory module installation rules” on page 75.

Power supply

One or two 800-watt hot-swap redundant power supplies (Universal input and compliant with 80 PLUS Gold)

System fans

Your server comes with eight system fans to provide proper system cooling and airflow.

Internal drives

Internal drives are devices that your server uses to read and store data. The internal drives supported by your server vary by model.

Hard disk drive

Up to four 3.5-inch hot-swap Serial Advanced Technology Attachment (SATA) hard disk drives, Serial Attached SCSI (SAS) hard disk drives (SCSI is the acronym for Small Computer System Interface), or solid-state drives

Up to eight 2.5-inch hot-swap SATA hard disk drives, SAS hard disk drives, or solid-state drives

Optical drive

One slim SATA optical drive in some models

For the location information about the internal drives or drive bays, see “Server components” on page 25.

Expansion slots

Two riser card assembly slots on the system board

One PCI Express card slot on the riser card assembly 1

One PCI Express card slot on the riser card assembly 2

For detailed information, see “Rear view of the server” on page 22.

Input/Output (I/O) features

One or two video graphics array (VGA) DB-15 connectors

One serial connector on the rear panel

Six USB 2.0 connectors (two on the front panel and four on the rear panel)

Three RJ-45 Ethernet connectors on the rear panel

For the location information about the connectors, refer to the related topics in “Locations” on page 13.

8ThinkServer RD540 User Guide and Hardware Maintenance Manual

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Lenovo RD540 manual Microprocessor, Memory, Power supply, System fans, Internal drives, Expansion slots