D-LINK DEMCB1Q4X Datasheet

Product Highlights

Better Performance

High speeds of up to 40 Gbps and lower latency result
in faster transmissions than other types of cables

Cost-eective Solution

QSFP+ connector on cable replaces four standard
SFP+ cable assemblies, ensuring higher port density
and cost savings

Energy Eciency

Lower power consumption and EMI emissions means
savings on energy usage and expenses, and less
electronic interference

QSFP+ Direct Attach Cable Series

40G Passive QSFP+ Twinaxial Direct Attach Cable

Features

Connectivity

• QSFP+ (Quad Enhanced Small Form-factor

Pluggable)

• 40 Gbps Gigabit Ethernet

• Three dierent models

• DEM-CB100QXS: 1 meter

• DEM-CB300QXS: 3 meters

• DEM-CB100QXS-4XS (QSFP+ to four 10G SFP+
cable): 1 meter

• Fully Compliant with the following standards:

• SFP MSA (Multi-Source Agreement)

• EIA 364

• UL 94

• SFF-8436

• SFF-8431

• EIA-364-1000.01

The 40G Passive QSFP+ Twinaxial Direct Attach Cable is a high performance, high

bandwidth and cost-eective connection solution that supports 40G Gigabit Ethernet.

The 40G Passive QSFP+ Twinaxial Direct Attach Cable is designed to support high-density

connections for switches with 40G interface, much faster than SFP+. There are three cable

models, including the DEM-CB100QXS (one meter) and the DEM-CB300QXS (three meter).

The DEM-CB100QXS-4XS QSFP+ to 4X SFP+ one-meter cable features a QSFP+ connector on

one end, and four SFP+ connectors on the other end, allowing it to connect to up to four 10G

servers. The 40G Passive QSFP+ Twinaxial Direct Attach Cable is certied to be compatible with

D-Link products to provide you best performance and reliability.

Ideal for High-Bandwidth Operations

The 40G Passive QSFP+ Twinaxial Direct Attach Cable supports speeds of up to 40 Gbps, while

having lower crosstalk and power consumption than other cables. This makes it an optimal

solution for handling high bandwidth transmission within short distances such as within a rack

or between racks inside energy-ecient data centers.

Quad Small Form-factor Pluggable Plus Format

The D-Link 40G Passive QSFP+ Twinaxial Direct Attach Cable uses Quad Small Form-factor

Pluggable Plus format (QSFP+) connectors, which integrate four transmitting and four receiving

channels. The QSFP+ cable assemblies can replace four standard SFP+ cable assemblies,

resulting in higher port density, cost eciency, and a reduction in power savings compared

to standard SFP+.

Save on Costs

The D-Link 40G Passive QSFP+ Twinaxial Direct Attach Cable features QSFP+ connectors on

both ends, thus eliminating the need for expensive QSFP+ transceivers. This makes it more

cost-eective than ber cables which must use QSFP+ transceivers.

QSFP+ Direct Attach Cable Series

40G Passive QSFP+ Twinaxial Direct Attach Cable

Technical Specications

General

Device Rate • 40 Gbps Gigabit Ethernet

Connector Type • QSFP+ Cable Assembly

Wire AWG • 30 AWG

Physical

Minimum Cable Bend Radius • DEM-CB100QXS, DEM-CB300QXS: 32 mm (1.26 inches) • DEM-CB100QXS-4XS: 23.5 mm (0.93 inches)

Cable Characteristic Impedance • 100 Ohms

Voltage • 30 V AC

Current • 0.5 A

Temperature • Operating: -40 to 85 °C (-40 to 185 °F)

Certifications • SFP MSA (Multi-Source Agreement)

• EIA-364-1000.01

• SFF-8436

• EIA 364

• UL 94

• SFF-8431

Order Information

Model Number Description

DEM-CB100QXS 1 meter 40G Passive QSFP+ Twinaxial Direct Attach Cable

DEM-CB300QXS 3 meter 40G Passive QSFP+ Twinaxial Direct Attach Cable

DEM-CB100QXS-4XS 1 meter 40G Passive QSFP+ to 4X 10G SFP+ Twinaxial Direct Attach Cable

Updated 2013/02/01

Specications are subject to change without notice. D-Link is a registered trademark of D-Link
Corporation and its overseas subsidiaries. All other trademarks belong to their respective owners.
©2013 D-Link Corporation. All rights reserved. E&OE.