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S6700 Series Switches Hardware Description

This document provides an overall description of the S6700 hardware, helping you obtain detailed information about each chassis, power module, fan module, cable, and optical module.

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ES5D21Q04Q01 (4-Port 40 Gig QSFP+ Rear Interface Card)

ES5D21Q04Q01 (4-Port 40 Gig QSFP+ Rear Interface Card)

Version Mapping

Table 8-9 lists the mapping between the ES5D21Q04Q01 card and software versions.

Table 8-9 Version mapping

Card Model

Software Version

V200R008C00 and later versions

Card Overview

The ES5D21Q04Q01 provides four 40GE QSFP+ optical ports for data access and line-rate switching.

The ES5D21Q04Q01 can be installed in a rear card slot of the switch models listed in Table 8-10.

Table 8-10 Applicable switch models
Card Switch Model
  • S6720-30C-EI-24S-AC
  • S6720-30C-EI-24S-DC
  • S6720-54C-EI-48S-AC
  • S6720-54C-EI-48S-DC
Figure 8-9 ES5D21Q04Q01


Table 8-11 describes functions of the card.

Table 8-11 Functions



Basic functions

Provides four 40GE QSFP+ optical ports for data access and line-rate switching. Each 40GE port can be split into four 10GE ports.

Hot swapping


Service port stacking

Ports on the card can be used as stack ports.
A 40GE port cannot be used as a stack port after it is split into four 10GE ports.

Indicators and Ports

Figure 8-10 Indicators on the ES5D21Q04Q01

Table 8-12 Description of indicators on the card








The system software is not running.


  • Fast blinking: The system is starting.
  • Slow blinking: The system is running normally.


A fault that affects services has occurred. The fault cannot be rectified automatically and requires manual intervention.




  • Steady on: A link has been established on the port.
  • Blinking: The port is transmitting or receiving data.


No link is established on the port.

Figure 8-11 Ports on the ES5D21Q04Q01

1. Four 40GE QSFP+ optical ports

40GE QSFP+ optical port

A 40GE QSFP+ optical port sends and receives service traffic at 40 Gbit/s and can be split into four 10GE ports. After a split, the 40GE QSFP+ optical port needs to be connected to a remote device using a 1-to-4 QSFP+ fiber (with matching optical modules), a 1-to-4 QSFP+ AOC cable (applicable in V200R009C00 and later versions), or a 1-to-4 QSFP+ copper cable. Table 8-13 lists the attributes of a 40GE QSFP+ optical port.

All the optical ports on the card support only QSFP+ optical modules, QSFP+ AOC cables (applicable in V200R009C00 and later versions; 10 m; QSFP+ to QSFP+ or QSFP+ to 4*SFP+), and QSFP+ copper cables (1 m, 3 m, and 5 m; QSFP+ to QSFP+ or QSFP+ to 4*SFP+).
Table 8-13 Attributes of a QSFP+ optical port
Attribute Description
Connector type LC/MPO
Optical port attributes Depend on the optical module used (see 40GE QSFP+ Optical Modules)
Standards compliance IEEE 802.3ba

Technical Specifications

Table 8-14 Technical specifications



Physical specifications

  • Dimensions (H x W x D): 40 mm x 100 mm x 208 mm (1.6 in. x 3.9 in. x 8.2 in.)
  • Weight: 0.5 kg (1.10 lb)
  • Maximum power consumption: 18.83 W

Environment specifications

  • Operating temperature: 0°C to 45°C (32°F to 113°F)
  • Relative humidity: 5% RH to 95% RH
  • Storage temperature: -40°C to +70°C (-40°F to +158°F)

Ordering Information

Ordering information is subject to updates with product version upgrades. The ordering information provided in this manual is for reference only. To obtain the latest ordering information, contact Huawei switch distributors or Huawei local office.

Table 8-15 Ordering information

Card Description

Card Name

Part Number
4-port 40 Gig QSFP+ interface card ES5D21Q04Q01 03022RRP
Updated: 2020-02-17

Document ID: EDOC1000013621

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