Lenovo ThinkAgile HX1321 Series User Manual page 24

Rear view of server models with two hot-swap drive bays and one PCIe slot
The following illustration shows the rear view of the server models with two hot-swap drive bays and one
PCIe slot. Depending on the model, your server might look slightly different from the illustration below.
Figure 10. Rear view of server models with two hot-swap drive bays and one PCIe slot
Table 6. Components on the rear of the server
1
Rear 2.5-inch drive bays
3
Power supply 1
5
NMI button
7
VGA connector
9
Ethernet connectors on LOM adapter (available on
some models)
1 Rear 2.5-inch drive bays
Used to install two 2.5-inch hot-swap drives on the rear of the server.
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. The vacant drive
bays must be occupied by drive bay fillers or drive fillers.
2 PCIe slot 3
Slot 3: PCIe x16 (x16, x8, x4, x1), low-profile
Note: PCIe slot 3 is supported only when two processors are installed.
3 Power supply 1
4
Power supply 2 (available on some models)
The hot-swap redundant power supplies help you avoid significant interruption to the operation of the
system when a power supply fails. You can purchase a power supply option from Lenovo and install the
power supply to provide power redundancy without turning off the server.
On each power supply, there are three status LEDs near the power cord connector. For information about the
LEDs, see "Rear view LEDs" on page 22.
5 NMI button
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.
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User Guide for ThinkAgile HX1321 Node ThinkAgile HX3321 Node
2
PCIe slot 3
4
Power supply 2 (available on some models)
6
USB 3.0 connectors
8
XClarity Controller network connector