Nvidia MCX545B-CCUN - Introduction

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Introduction
This is the User Guide for Ethernet adapter cards based on the ConnectX®-5 integrated circuit device
for OCP Spec 2.0. These adapters connectivity provide the highest performing low latency and most
flexible interconnect solution for PCI Express Gen 3.0/4.0 servers used in Enterprise Data Centers and
High-Performance Computing environments.
The following provides the ordering part number, port speed, number of ports, and PCI Express speed.
ConnectX-5 Ex Ethernet Adapter Cards
Model ConnectX-5 Ex Cards for OCP Spec 2.0
Part Number MCX546A-BCAN MCX546A-CDAN
Ethernet Data Rate 10/25/40 Gb/s 10/25/40/50/100 Gb/s
Host Management - √
Network Connector Type Dual-port QSFP28 Dual-port QSFP28
OCP Spec 2.0 Type Type 2 Stacking Height
PCI Express Connectors
PCIe Gen 3.0 x16
(a), (b)
SERDES @ 8.0GT/s
PCIe Gen 3.0 / 4.0 x16
(a), (b)
SERDES @ 8.0GT/s / 16.0GT/s
Dimensions 3.07 in. x 4.33 in (78.00mm x 110.05mm)
RoHS RoHS Compliant
IC Part Number MT28808A0-FCCF-EV
Device ID 4121 for Physical Function (PF)
4122 for Virtual Function (VF)
a. PCIe 4.0 x16 bus can supply a maximum bandwidth of 256Gb/s (=16 *16GT/s, including overhead),
and can support 200Gb/s when both network ports of the card run at 100Gb/s.
b.TheGen4.0 cards have been tested and certified with PCIe 3.0 servers. PCIe 4.0 interface will be
tested when servers with Gen 4.0 support become available.
ConnectX-5 Ethernet Adapter Cards
Model ConnectX-5 Cards for OCP Spec 2.0
Part
Number
MCX542A-
ACAN
MCX542B-
ACAN
(a)
MCX542B-
ACUN
MCX545B-
GCUN
MCX545A-
CCAN
MCX545A-
CCUN
MCX545B-
CCUN
Network
Connecto
r Type
Dual-port
SFP28
Dual-port
SFP28
Dual-port
SFP28
Single-port
QSFP28
Single-port
QSFP28
Single-port
QSFP28
Single-port
QSFP28
OCP Spec
2.0 Type
Type 1
Stacking
Height
Type 1
Stacking
Height
Type 1
Stacking
Height
Type 1
Stacking
Height
Type 2
Stacking
Height
Type 2
Stacking
Height
Type 1
Stacking
Height