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MCX542B-AC[A/U]N Specifications
Physical
Size
: 2.67 in. x 4.33 in (68.00mm x 110.05mm)
Connector
: Dual SFP28 Ethernet (copper and optical)
Protocol Support
Ethernet
: 25GBASE-CR/CR-S, 25GBASE-SR, 25GBASE-LR, 25G Ethernet Consortium,
10GBASE-SR, 10GBASE-LR, 10GBASE-ER, SGMII / 1000BASE-X
Data Rate
: 1/10/25 Gb/s Ethernet
PCI Express Gen3
: SERDES @ 8.0GT/s (respectively), 8 lanes (2.0 and 1.1 compatible)
Power
Voltage
: 3.3V_PCI, 3.3V_AUX, 5V_AUX, 12V
Power
Cable Type
Typical Power
(a)
Passive Cables
9.51W
1.5W Active Cables
12.51W
Maximum Power
Passive Cables
11.98W
1.5W Active Cables
14.98W
Maximum power available through QSFP28 port:
1.5W
Environmental
Temperature
Operational
0°C to 55°C
Non-operational
-40°C to 70°C
Humidity
90% relative humidity
(b)
Altitude
(Operational)
3050m
Airflow
(c)
Cable Type
Heatsink to Port
Port to Heatsink
Passive Cable
400LFM
400LFM
Active 1.5W Cable
NA
1200LFM
(In Mellanox 0.8W
Cables only)
Regulatory
Safety
CB / cTUVus / CE
EMC
CE / FCC / VCCI / ICES / RCM
RoHS
RoHS compliant
Mellanox recommends populating MCX542B-ACAN in a standard PCIe x8 OCP connector
which exposes PCIe lanes in a straight manner.
In case the OCP slot exposes PCIe lanes in a reversed manner, MCX542B-ACAN supports
automatic lane reversal with FW image from April 2019 release and above.
Please note that in standby mode, only port0 is available.
