Specifications

Physical

Low Profile Adapter Card Size: 6.6 in. x 2.71 in. (167.65mm x 68.90mm)
Auxiliary PCIe Connection Card Size: 4.44 in. x 1.57 in. (113.0mm x 40.00mm)
Slim-Line SAS Cable: 9.8 in. x 1.02 in. (250cm x 25.95mm)

Connector: Dual QSFP28 InfiniBand and Ethernet (copper and optical)

Protocol Support

InfiniBand: IBTA v1.3a

Auto-Negotiation: 1X/2X/4X SDR (2.5Gb/s per lane), DDR (5Gb/s per lane), QDR (10Gb/s per lane), FDR10 (10.3125Gb/s per lane), FDR (14.0625Gb/s per lane), EDR (25Gb/s per lane) port

Ethernet: 100GBASE-CR4, 100GBASE-KR4, 100GBASE-SR4, 50GBASE-R2, 50GBASE-R4, 40GBASE-CR4, 40GBASE-KR4, 40GBASE-SR4, 40GBASE-LR4, 40GBASE-ER4, 40GBASE-R2, 25GBASE-R, 20GBASE-KR2, 10GBASE-LR,10GBASE-ER, 10GBASE-CX4, 10GBASE-CR, 10GBASE-KR, SGMII, 1000BASE-CX, 1000BASE-KX, 10GBASE-SR

Data Rate

InfiniBand

SDR/DDR/QDR/FDR/EDR

Ethernet

1/10/25/40/50/100 Gb/s

PCI Express Gen3: SERDES @ 8.0GT/s, 2x x8 lanes (2.0 and 1.1 compatible)

Warning

PCIe 3.0 x16 bus can supply a maximum bandwidth of 128Gb/s only (=16 * 8GT/s, including overhead), and therefore cannot support 200Gb/s when both network ports of MCX556A-ECAT run at 100Gb/s.

Power and Airflow

Voltage: 12V

Power

Cable

Typical Power b

Passive Cables

17.1W

Maximum Power

Passive Cables

20.0W

1.5W Active Cables

23.3W

2.5W Active Cables

25.5W

Maximum power available through QSFP28 port: 5W

Airflow: see Airflow Specifications

Environmental

Temperature

Operational

0°C to 55°C

Non-operational

-40°C to 70°C

Humidity

Operational

10% to 85% relative humidity

Non-operational

10% to 90% relative humidity

Altitude (Operational)

3050m

Regulatory

Safety: CB / cTUVus / CE

EMC: CE / FCC / VCCI / ICES / RCM

RoHS: RoHS compliant

a The ConnectX-5 adapters supplement the IBTA auto-negotiation specification to get better bit error rates and longer cable reaches. This supplemental feature only initiates when connected to another NVIDIA Infini­Band product.
b Typical power for ATIS traffic load.
c For both operational and non-operational states.

Physical

Low Profile Adapter Card Size: 6.6 in. x 2.71 in. (167.65mm x 68.90mm)
Auxiliary PCIe Connection Card Size: 4.44 in. x 1.57 in. (113.0mm x 40.00mm)
Slim-Line SAS Cable: 9.8 in. x 1.02 in. (350cm x 25.95mm)

Connector: Dual QSFP28 InfiniBand and Ethernet (copper and optical)

Protocol Support

InfiniBand: IBTA v1.3a

Auto-Negotiation: 1X/2X/4X SDR (2.5Gb/s per lane), DDR (5Gb/s per lane), QDR (10Gb/s per lane), FDR10 (10.3125Gb/s per lane), FDR (14.0625Gb/s per lane), EDR (25Gb/s per lane) port

Ethernet: 100GBASE-CR4, 100GBASE-KR4, 100GBASE-SR4, 50GBASE-R2, 50GBASE-R4, 40GBASE-CR4, 40GBASE-KR4, 40GBASE-SR4, 40GBASE-LR4, 40GBASE-ER4, 40GBASE-R2, 25GBASE-R, 20GBASE-KR2, 10GBASE-LR,10GBASE-ER, 10GBASE-CX4, 10GBASE-CR, 10GBASE-KR, SGMII, 1000BASE-CX, 1000BASE-KX, 10GBASE-SR

Data Rate

InfiniBand

SDR/DDR/QDR/FDR/EDR

Ethernet

1/10/25/40/50/100 Gb/s

PCI Express Gen3: SERDES @ 8.0GT/s, 2x x8 lanes (2.0 and 1.1 compatible)

Warning

PCIe 3.0 x16 bus can supply a maximum bandwidth of 128Gb/s only (=16 * 8GT/s, including overhead), and therefore cannot support 200Gb/s when both network ports of MCX556A-ECAT run at 100Gb/s

Adapter Card Power

Voltage: 12V

Power

Cable

Typical Power b

Passive Cables

17.1W

Maximum Power

Passive Cables

20.0W

1.5W Active Cables

23.3W

2.5W Active Cables

25.5W

Maximum power available through QSFP28 port: 5W

Active Auxiliary PCIe Connection Card Power

Typical Power

1.46W

Maximum Power

1.85W

Airflow: see Airflow Specifications

Environmental

Temperature

Operational

0°C to 55°C

Non-operational

-40°C to 70°C

Humidity

Operational

10% to 85% relative humidity

Non-operational

10% to 90% relative humidity

Altitude (Operational)

3050m

Regulatory

Safety: CB / cTUVus / CE

EMC: CE / FCC / VCCI / ICES / RCM

RoHS: RoHS compliant

a The ConnectX-5 adapters supplement the IBTA auto-negotiation specification to get better bit error rates and longer cable reaches. This supplemental feature only initiates when connected to another NVIDIA Infini­Band product.
b Typical power for ATIS traffic load.
c For both operational and non-operational states.

Airflow (LFM)

Airflow Direction - Heat Sink to Port

Cable Type

Passive

Active 1.5W

Active 2.5W

Active 3.5W

Active 5W

MCX556M-ECAT-S25

400

400

500

600

900

MCX556M-ECAT-S35A

400

400

500

600

900

Warning

All dimensions are in millimeters. All the mechanical tolerances are +/- 0.1mm.

For the 3D Model of the card, please refer to http://www.nvidia.com/page/3d_models.

Dual-port Adapter Card

Auxiliary PCIe Connection Card

image2019-1-10_18-22-19.png

image2019-1-10_18-22-32.png

Slim-Line SAS Cable (25cm)

Slim-Line SAS Cable (35cm)

image2019-1-10_18-22-55.png

image2019-1-13_10-58-45.png

Adapter Card Tall Bracket

Auxiliary PCIe Connection Card Tall Bracket

image2019-1-10_18-27-38.png

image2019-1-10_18-28-17.png

© Copyright 2023, NVIDIA. Last updated on May 22, 2023.