Lightwin 10G SFP+ Direct Attach Copper Cable 0.5m (LWO-DAC-SFPP-0.5M)

Short-range 10 Gigabit links between SFP+ ports in servers, switches, and storage arrays often suffer from expensive optics, high latency, and unnecessary power draw. The Lightwin LWO-DAC-SFPP-0.5M is a passive Direct Attach Copper (DAC) twinax cable that replaces two SFP+ transceivers and a fiber patch cord with a single, low-cost, low-latency copper assembly. At just 0.5 meters, it is ideal for top-of-rack switching, server-to-switch uplinks, and storage area network connections within the same cabinet.

Who is it for

Data center operators, network engineers, and system integrators who need reliable, cost-effective 10GbE connectivity over very short distances. If you are connecting a server NIC to a top-of-rack switch, linking two switches in a stack, or attaching a storage controller to a SAN fabric, this DAC cable offers plug-and-play simplicity without the cost and complexity of optical modules.

Main features

• Passive Direct Attach Copper (DAC) twinax cable, 0.5 meters in length
• Two integrated SFP+ connectors (one on each end) for direct connection between SFP+ ports
• Supports 10 Gigabit Ethernet (10GbE) data rates, compliant with IEEE 802.3ae 10GBASE-CR
• Ultra-low latency and low power consumption (typically <0.1W per end)
• Hot-swappable: plug and unplug without powering down the system
• 100 Ohm impedance, 3.3V supply voltage
• RoHS, CE, and FCC compliant

Specifications

• Cable type: Direct Attach Copper (DAC) passive twinax
• Data rate: 10 Gigabit Ethernet (10GbE)
• Connector type: SFP+ to SFP+
• Cable length: 0.5 meters
• Cable material: Copper
• Impedance: 100 Ohm
• Voltage supply: 3.3V
• Operating temperature: 0°C to 70°C
• Storage temperature: -40°C to 85°C
• Protocol support: 10G Ethernet, Fibre Channel, InfiniBand
• Compliance: RoHS, CE, FCC
• Application: Data center interconnect, server-to-switch, storage area networks (SAN)

Tips

DAC cables are intended for short-reach connections within the same rack or adjacent racks. Ensure both devices have SFP+ ports and support passive DACs. For distances beyond 5 meters, consider active optical cables (AOCs) or fiber transceivers. Always check vendor compatibility lists if using with branded switches or NICs, as some OEMs lock their ports to specific cable types.