Rear View Leds - Lenovo HR650X V2 User Manual

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.
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.
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. Below lists all supported parts in the slots:
• COM cable
• Fiber channel HBA adapters
• GPU adapters
• RAID/HBA adapters
• Network adapters
• NVMe switch adapter
• PCIe SSDs
Power supplies
The hot-swap redundant power supply helps 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 14.
USB 3.1 Gen 1 connectors
The USB 3.1 Gen 1 connectors can be used to attach a USB-compatible device, such as a USB keyboard,
USB mouse, or USB storage device.
VGA connector
The VGA connectors on the front and rear of the server can be used to attach a high-performance monitor, a
direct-drive monitor, or other devices that use a VGA connector.
Network management interface
The network management interface generally has three roles: working as communication protocol stack,
defining network management protocol at application layer, and defining management information
transferred.

Rear view LEDs

The illustration in this section shows the LEDs on the rear of the server.
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HR650X V2 User Guide