40G Passive QSFP+ Twinaxial Direct Attach Cable
QSFP+ Direct Attach Cable Series
The 40G Passive QSFP+ Twinaxial Direct Attach Cable is a high performance, high
bandwidth and cost-eective 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 certied 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-ecient 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 eciency, 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-eective than ber cables which must use QSFP+ transceivers.
Features
Connectivity
• QSFP+ (Quad Enhanced Small Form-factor
Pluggable)
• 40 Gbps Gigabit Ethernet
• Three dierent 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
Better Performance
High speeds of up to 40 Gbps and lower latency result
in faster transmissions than other types of cables
Cost-eective Solution
QSFP+ connector on cable replaces four standard
SFP+ cable assemblies, ensuring higher port density
and cost savings
Energy Eciency
Lower power consumption and EMI emissions means
savings on energy usage and expenses, and less
electronic interference
Product Highlights
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