Cisco QSFP-H40G-CU1M 40GBASE-CR4 QSFP+ Direct-Attach Cable, Refurbished
Warranty: Lifetime
Quick answer: The Cisco QSFP-H40G-CU1M is a 1-meter passive twinax direct-attach copper (DAC) cable with QSFP+ connectors on both ends, used for 40 Gigabit Ethernet (40GBASE-CR4) links between switches and servers in the same rack. This listing is a genuine Cisco cable. Resilient Tec sells it refurbished, with a lifetime warranty and free US shipping from Knoxville, TN.
Condition: Refurbished
The Cisco QSFP-H40G-CU1M is a 1-meter, passive twinax direct-attach copper cable designed for high-speed 40 Gigabit Ethernet connectivity. Featuring QSFP+ connectors, it offers a cost-effective solution for short-range connections between switches, routers, and servers in data center and enterprise environments.
Key Specifications
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Data Rate: 40Gbps
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Interface: QSFP+ connectors
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Cable Type: Passive twinax copper, 30AWG
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Length: 1 meter
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Power Consumption: 0.1W
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Operating Temperature: Commercial range, 0°C to 70°C (32°F to 158°F)
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Form Factor: QSFP+ direct-attach cable
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Compatibility: Supports a wide range of Cisco switches and routers (e.g., Nexus 9000, Catalyst 9500 series)
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Standards: IEEE 802.3ba, QSFP+ MSA, ELV and RoHS compliant
Frequently Asked Questions
Can it break out to 4 x 10G?
No. This is a straight QSFP+ to QSFP+ cable. Breakout to four SFP+ ports uses a different cable type (QSFP to 4 x SFP+).
DAC or QSFP-40G-SR4 optics: which should I use?
For runs of a few meters inside a rack, the DAC is cheaper and draws almost no power. For longer runs use 40G optics over multimode fiber.
Will it work in non-Cisco equipment?
It is coded for Cisco. Many other platforms accept it, but some vendors lock their ports to their own cables, so check before ordering.
What warranty and shipping come with it?
Resilient Tec's lifetime warranty. US standard shipping is free with no minimum, and orders typically arrive in 3 to 5 days.
You Might Also Need
Cisco QSFP-H40G-CU1M, new
Cisco QSFP-40G-SR4 optic
All DAC cables
Quick answer: The Cisco QSFP-H40G-CU1M is a 1-meter passive twinax direct-attach copper (DAC) cable with QSFP+ connectors on both ends, used for 40 Gigabit Ethernet (40GBASE-CR4) links between switches and servers in the same rack. This listing is a genuine Cisco cable. Resilient Tec sells it refurbished, with a lifetime warranty and free US shipping from Knoxville, TN.
Condition: Refurbished
The Cisco QSFP-H40G-CU1M is a 1-meter, passive twinax direct-attach copper cable designed for high-speed 40 Gigabit Ethernet connectivity. Featuring QSFP+ connectors, it offers a cost-effective solution for short-range connections between switches, routers, and servers in data center and enterprise environments.
Key Specifications
-
Data Rate: 40Gbps
-
Interface: QSFP+ connectors
-
Cable Type: Passive twinax copper, 30AWG
-
Length: 1 meter
-
Power Consumption: 0.1W
-
Operating Temperature: Commercial range, 0°C to 70°C (32°F to 158°F)
-
Form Factor: QSFP+ direct-attach cable
-
Compatibility: Supports a wide range of Cisco switches and routers (e.g., Nexus 9000, Catalyst 9500 series)
-
Standards: IEEE 802.3ba, QSFP+ MSA, ELV and RoHS compliant
Frequently Asked Questions
Can it break out to 4 x 10G?
No. This is a straight QSFP+ to QSFP+ cable. Breakout to four SFP+ ports uses a different cable type (QSFP to 4 x SFP+).
DAC or QSFP-40G-SR4 optics: which should I use?
For runs of a few meters inside a rack, the DAC is cheaper and draws almost no power. For longer runs use 40G optics over multimode fiber.
Will it work in non-Cisco equipment?
It is coded for Cisco. Many other platforms accept it, but some vendors lock their ports to their own cables, so check before ordering.
What warranty and shipping come with it?
Resilient Tec's lifetime warranty. US standard shipping is free with no minimum, and orders typically arrive in 3 to 5 days.
You Might Also Need
Cisco QSFP-H40G-CU1M, new
Cisco QSFP-40G-SR4 optic
All DAC cables