SEESUO 40G QSFP+ DAC cable, passive is a fast and inexpensive solutionfor easy connection of two network active switch / router elements at 40Gbps without the need to purchase separate modules and other accessories (such as optical patch cables).

The high-quality twinax DAC cable comes with universal Cisco compatibility, which guarantees trouble-free use with most active element manufacturers. The DAC interface cable plugs directly into the QSFP+ slot on the device, creating a connection speed of up to 40Gbps. The connection using a DAC in the device also appears as a connection with classic QSFP+ modules. Length 1m , passive technology.

The 40G QSFP+ Passive Direct Attach Copper Twinax Cable is designed for use in 40GBASE Ethernet. It provides a QSFP+ to QSFP+ copper direct-attach solution. This cable is compliant with IEEE 802.3ba Ethernet standard and QSFP MSA Compliant.
With these features, this easy to install, high speed, cost-effective direct attach copper twinax cable is suitable for short-distance connectivity within a rack or between adjacent racks in data centers.

This is a high-quality Generic Compatible 40G QSFP+ Passive DAC (Direct Attach Cable) Copper. It is a cost-effective solution that provides high bandwidth and transmission rates over short distances. QSFP+ (Quad Small Form-factor Pluggable Plus) Cable Assemblies are suitable for very short distances and offer a highly cost-effective way to establish a 40-Gigabit link between QSFP+ ports of QSFP+ switches within racks and across adjacent racks. QSFP+ cables are used for 40 GbE and Infiniband standards. Each DAC cable is 100% optically inspected and tested for compatibility before shipping.

A direct attach cable, short for DAC cable, is a type of factory terminated twinax cable that connects directly into transceivers and can be brought in several lengths for short distances of up to 15 meters. These cables consist of fixed lengths of shielded copper coaxial or fiber optic cable with single pluggable transceivers at either end, that have varying gauge values between 24AWG and 30AWG. The DAC cable may be capable of interconnection up to 15 meters using a twinaxial copper cable and reaches 100 meters over an active optical cable at 10Gbps, 40Gbps or higher.

DAC Cables can be either passive or active. The passive direct attach cable has no electrical components, which results in less power consumption. Active direct attach cables are composed of electrical components, so they use more power, but gain more distance and increase signal strength. Active cables are more expensive and consume more power when in use compared to passive cables.

Features

• Lower cost than QSFP+ optical transceiver and active optical cable (AOC)
• Maximum aggregate data rate: 40 Gb/s (4 x 10Gb/s)
• Hot-pluggable QSFP+ 38-PIN footprint
• Single 3.3V power supply
• Compliant with IEEE 802.3ba 40GBASE-CR4 standard
• Compliant with QSFP+ MSA SFF-8436
• Compliant with Infiniband QDR/DDR data rates
• Maximum 1.5W operation power
• Operating temperature range: 0 to 70°C
• RoHS Compliant and Lead-Free

Specification

Generic DAC Cable Features & Specifications

• Copper Passive

• AWG30

• PVC (OFNR) Jacket

• Easy to Install

• Hot pluggable

• Low insertion loss

• RoHS Compliant

• Temperature Range: 0°C to 70°C

• Available in various lengths

Generic DAC Cable Options Available:

• 10G SFP+ to SFP+ DAC

• 25G SFP28 to SFP28 DAC

• 40G QSFP+ to QSFP+ DAC

• 40G QSFP+ to 4x SFP+ DAC

• 100G QSFP28 to 4x SFP28 DAC

• 100G QSFP28 to QSFP28 DAC

• 56G QSFP+ to QSFP+ DAC

Product Highlights

• Max. Power Consumption 0.5W
• Tested in Targeted Switches for Superior Performance, Quality, and Reliability
• Minimum Bend Radius 35mm for Flexible Routing
• Simplifies the Patching and Offers a Cost-effective Way for Short Links
• Hot Pluggable QSFP+ MSA Compliant
• Low Insertion Loss and Ultra-low Crosstalk for Improved Performance
• RoHS Compliant

FAQ:

Q:Can this cable be used in the stack port of Cisco Meraki series device to achieve the switch stacking？

A:No, it can’t be used in the stack port of your device. FS DAC & AOC can only be used in the business port of the switch to achieve virtual stacking, but can not be used in the stack port to achieve physical stacking. The stacking through the stack port of device belongs to physical stacking which needs a specific stacking cable, and it is under development for now.

Q:What wire gauges does SEESUO.COM offer for 40G QSFP+ Passive Direct Attach Copper Cables?

A:SEESUO.COM offers 40G QSFP+ Passive Direct Attach Copper Twinax Cables in 28AWG for 0.5m, 1m, 2m, 3m cables, 26AWG for 4m, 5m cables and 24AWG for 6m, 7m cables.

Q:What kinds of custom choices are offered in SEESUO.COM?

A:As for customized direct attach cables, SEESUO.COM offers regular custom choices such as compatibility, cable length, cable color, operating temperature, label pattern, label colors and etc. What's more, SEESUO.COM welcomes any inquiry for customized products and solutions for all need and specifications.

Q:Can I have different compatibilities for each end of my direct attach cables?

A:Yes, you can. SEESUO.COM offers customized dual compatibility solutions for direct attach cables so that you can choose compatibilities for each end individually. All you need to do is to select "Dual Compatibility Solutions" option in Compatible Brands drop-down box and note down your devices' model numbers in custom page.

Q:What cables lengths does SEESUO.COM offer for 40G QSFP+ Passive Direct Attach Copper Cables?

A:SEESUO.COM offers 40G QSFP+ Passive Direct Attach Copper Twinax Cables in 0.5m, 1m, 2m, 3m, 4m, 5m, 6m, 7m and inquiries for customized length are also welcomed.

Q:Why should I trust SEESUO.COM compatible direct attach cables?

A:Besides the price advantage we have compared to branded cables, SEESUO.COM DACs also maintain the same performance and reliability. To satisfy our customers' needs of high performance, all of our DACs are tested multiple times in mainstream original brand switches in our test center before shipped out. What's more, using compatible optics in brand devices will not negatively affect manufacturers' warranty if that's your concern.

Q:Will this work between a mikrotik CRS326-24S+2Q+RM and a Intel® Ethernet Converged Network Adapter XL710. What types do I have to use? mikrotik or generic? Thanks

A:Technical team advice you choose Intel compatible cables.

Q:Will this work with Ruijie RG-S6120-20XS4VS2QXS ?

A:Yes, please choose the Cisco-compatible Passive Direct Attach Copper Cable or Generic-compatible Passive Direct Attach Copper Cable.

Q:I need a 40G DAC cables to work with Cisco NEXUS N3K-C3064PQ to Intel XL710-Q2 adapter (40Gb/s), which compatible will work?

A:Please choose Dual Compatibility Solutions, then write down your switches information, our team will prepare the right products for you.

Q:Hi，I need the pre terminated cable to connect a mellanox card to a Cisco Nexus N9K-C93180YC-FX, can you help me with that? On the card side its 40G, switch is 40G

A:Hi , thank you for contacting us. You can choose #69907, one end is ME compatible, and the other end is Cisco compatible.

Q:I have a couple of DELL S4048-ON switches that I need to connect to a Ruckus ICX 7850-48F. Both have QSFP+ ports. What do you recommend for connection. Is there a direct attach option, or do we need to use transceiver + fibre patch lead?

A:You can choose the Customised 40G DAC cable with dual compatibility solutions and enter your device number.

Q:Will this work on Mikrotik brand equipment?

A:Your mileage may vary depending on the equipment you're using, but I'm using one to connect between my Mikrotik CRS226 (SFP+ port 1) and my Ubiquiti US-16-XG and it works great.