QSFP-4SFP25G-CU3M Compatible 100G QSFP28 to 4x25G SFP28 Passive Direct Attach Copper Twinax Cable 3m

Description

DACs are the most basic form of direct attach cabling. DACs are constructed using shielded twin-axial copper cable in varying gauges from 24 to 30AWG. The length of the cable affects the signal attenuation which requires a specific gauge for the conductors. Longer cables require larger gauges in order to reduce the signal transmission loss through the cables.

DACs are passive assemblies since they do not amplify or condition the signal in any way. Instead, signals are passed through and regenerated by the host network equipment. The length limit for passive DACs (without amplification) is 7m.
Although DACs are passive, the connectors in DACs do contain an “Electrically Erasable Programmable Read-Only Memory”, or EEPROM, that is used to store and provide information to host network equipment such as manufacturer name, serial number, part number, and date of manufacture. Technically, this EEPROM does consume a very small amount of power, around 0.15 W.

Gvdlink QSFP-100G to four SFP-25G copper direct-attach breakout cables (Figure 2) are suitable for very short links and offer a cost-effective way to connect within racks and across adjacent racks . These breakout cables connect to a 100G QSFP port of a switch on one end and to four 25G SFP ports of a switch / server on the other end. Gvdlink currently offers passive cables in lengths of x=1 , 2 , 3 and 5 meters.

Features

• Functionally identical to QSFP-4SFP25G-CU3M
• Connector A: 1x QSFP28 100Gbps Rated Connector

• Connector B: 4x SFP28 25Gbps Rated Connector

• Economically links up a QSFP28 port with an upstream 25G SFP28 Switch
• Compliant with SFF-8665 and SFF-8402
• Bridge the gap between your 25G and 100G capable switches/host adapters
• Optimized EMI/EMC performance
• Temperature Range: 0~ 70 °C
• ROHS Compatible

​Our QSFP28 100G cables product series

Advantages

• Fully product line
• High Quality with ISO9001 , CE , TUV , FCC and RoHS certificates
• 100%tested
• 3 year Warranty
• very fast delivery

Applications

• 25G , 100G Ethernet (25GBASE-CR , 100GBASE-CR4)
  Intra-Rack System , Top of Rack (ToR) , Middle of Rack (MoR)

• Switch-to-Switch, Switch-to-Server

• Switch , Storage , Server , NIC

Our product line show

Our Services

1. Warranty

three years Warranty, three monthes free exchange and one year free repairing.

2. OEM, ODM are welcome.

3. Free sample will be provided.

Free samples under a certain value are available,with freight cost collect.

4. Any Inquire is welcome.

Any inquire will be replied within 24 hours.

5. After-sales service.
a. From the beginning of production till the successful delivery, we will track on time and post you the status.
b. When the goods arrived, if you have question after inspection, please feel free to contact us, we'll provide solution.