What is DAC？

DAC (Direct Attach Cable)，it use silver plated conductor and foamed insulation core wire as the material, using wire-pair shielding and total shielding, thus forming a high-speed cable.

Here introduce two types Direct Attach Cable:

1.     100G QSFP28 DAC 

• 100GE QSFP28 Passive Copper provides customers with 100Gb/high-bandwidth data connectivity, 4-way duplex channels, 25Gb/s per channel working rate, and 100Gb/s aggregation bandwidth

• Complies with SFF-8665/SFF-8679 and IEEE 802.3bj and Infiniband EDR

• Provides support for distances ranging from 1m to 3m. This product is widely used in data center or supercomputer system scenarios

2.     100GE QSFP28 to 25G SFP28 DAC

• 100GE QSFP28 to 4x 25GE SFP28 parallel fan-out passive copper cables provide customers with 100Gb/high-bandwidth data connectivity, including 100GE QSFP28 on one end and 4X 25GE SFP28 on the other end

• Complies with SFF-8665/SFF-8679 and IEEE 802.3bj and Infiniband EDR

• Provides support for distances ranging from 1m to 3m. This product is widely used in data center or supercomputer system scenarios.

DAC application:

DAC are generally used on Ethernet switches, such as LY2 switches.