Broadcom 9540-2M2 User Guide
Broadcom
®
MegaRAID
™
9540-2M2 Boot Adapter
Connector
Type
Description
J10
Global HDD activity LED header
2-pin connector.
Connects to an LED that indicates activity on the drives connected to
the controller.
J11
Global drive fault LED header
2-pin connector.
Connects to an LED that indicates whether a drive is in a fault condition.
J114, J115 SSD connector
Two M.2 SSD connectors.
The following table describes the LEDs on the adapter.
Table 2: LED Designations
LED
Type
Description
LED2 Yellow IOC over
temperature
Stays on solid to indicate that the SAS3808 IOC temperature sensor is over the temperature
threshold. When the IOC is in the proper temperature range, this LED is off.
LED3 Green system heartbeat
Indicates that the SAS3808 IOC is operating normally.
MegaRAID 9540-2M2 Boot Adapter Technical Specifications
The operating (thermal and atmospheric) conditions for the adapter are as follows:
•
Relative humidity range (non-condensing): 5% to 90%
•
Temperature range: 0°C to +55°C
The minimum airflow required depends on the installed M.2 SSDs. The minimal airflow without any M.2 drives is 150
LFPM measured at 55°C (ambient). When attaching M.2 drives, you must supply enough airflow to cool the M.2 drives
and to keep the SAS3808 IOC processor's junction temperature at 105°C or less. The M.2 drives might require heat sinks.
M.2 drive heat sinks are available from third-party suppliers.
The non-operating (such as storage and transit) conditions for the adapter are as follows:
•
Relative humidity range (non-condensing): 5% to 95%
•
Temperature range: –40°C to +70°C
Power Supply Requirements
All power, included that used to power the onboard M.2 drives, is supplied to the adapter through the PCIe 3.3V rail (3.3V
± 9%) and the 12V rail (12V ± 8%). Onboard switching regulator circuitry operates from the 3.3V rail and the 12V rail to
provide the necessary voltages. Each M.2 drive may use a maximum of 11.55W.
The M.2 drives are powered from the 12V rail with the 1.5V and 1.8V SAS3808 supplies. Using the 12V rail, the adapter
can support the maximum power requirements of the M.2 drives. The SAS3808 core rail is powered from the 3.3V rail
which requires approximately 6W. This means, depending on the drives being used, the adapter might draw more than
25W total (the limit of some x8 slots). However, many systems combine the 12V and 3.3V rails to supply up to 35W (25W
from the 12V rail and 10W from the 3.3V rail). The total power consumed depends on which M.2 SSDs drives are used.
You must complete a power analysis based on the drive selection for your system.
The following values represent typical power using two 500 GB x4 NVMe PCIe 16GT/s drives:
•
PCIe 3.3V: 6W
•
PCIe +12V: 11.5W
•
Total power: 17.5W
Broadcom
9540-2M2-UG100
10
Содержание MegaRAID 9540-2M2
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