Lenovo ThinkSystem SR665 V3 User Manual page 28

Rear view with four 2.5-inch rear drive bays and six PCIe slots
Table 10. Components on the rear of the server
Callout
"PCIe slots" on page 18
1
"Power supply units" on page 18
3
"USB 3 (5 Gbps) connectors (3)" on page 19
5
"XCC system management port" on page 19
7
Rear components overview
PCIe slots
The PCIe slots are on the rear of the server and your server supports up to eight PCIe slots on riser 1, 2, and
3 assemblies. For more information, see
Hot-swap drives and drive bays
The drive bays on the front and rear of your server are designed for hot-swap drives. The number of the
installed drives in your server varies by model. When you install drives, follow the order of the drive bay
numbers.
The EMI integrity and cooling of the server are protected by having all drive bays occupied. Vacant drive
bays must be occupied by drive fillers.
Power supply units
The hot-swap redundant power supply units help you avoid significant interruption to the operation of the
system when a power supply unit fails. You can purchase a power supply option from Lenovo and install the
power supply unit to provide power redundancy without turning off the server.
On each power supply unit, there are three status LEDs near the power cord connector. For information
about the LEDs, see "Power supply LEDs" on page
NMI button
Use this button only when you are directed to do so by Lenovo Support. Press this button to force a
nonmaskable interrupt (NMI) to the processor. By this way, you can make the operating system halt (such as
Windows Blue Screen of Death) and take a memory dump. You might have to use a pen or the end of a
straightened paper clip to press the button.
ThinkSystem SR665 V3 User Guide
18
Callout
"Rear 2.5-inch drive bays (4)" on page 18
2
"NMI button" on page 18
4
"VGA connector" on page 19
6
"Ethernet connectors on OCP module (optional)" on
8
page 19
"PCIe slots and PCIe adapters" on page
207.
46.