400G QSFP-DD DAC Cable 0.5-3m Passive for Data Center Networking
| Part Number | Product | Data Rate | Length | Temp |
|---|---|---|---|---|
| GL4H-DQDY1xxxxM | 400G QSFP-DD to QSFP-DD DAC | 400Gbps | 0.5~3m | 0~70 ℃ |
| GL4H-DQDY2xxxxM | 400G QSFP-DD to 2*QSFP56 DAC | 400Gbps | 0.5~3m | 0~70 ℃ |
| GL4H-DOSY1xxxxM | 400G OSFP to OSFP DAC | 400Gbps | 0.5~3m | 0~70 ℃ |
| GL4H-DOSY2xxxxM | 400G OSFP to 2*QSFP56 DAC | 400Gbps | 0.5~3m | 0~70 ℃ |
- Switches, servers and routers
- Data Center networks
- Storage area networks
- High performance computing
- Telecommunication and wireless infrastructure
- Medical diagnostics and networking
- Test and measurement equipment
- Passive design requires little to no power, helping reduce data center energy costs.
- Supports aggregate data rates of 400Gbps(PAM4)
- Hot-swappable and easy to install, with no configuration required—reduces downtime during maintenance or upgrades.
- Ruggedized connectors and thick copper cable jacket ensure long service life and strong EMI protection.
- 28AWG through 30AWG cable
- Straight and break out assembly configurations available
- Customized cable braid termination limits EMI radiation
- Customizable EEPROM mapping for cable signature
- Fully compliant with QSFP-DD MSA (Multi-Source Agreement) and IEEE 802.3bs standards for 400G Ethernet.
FAQ About 400G QSFP56-DD DAC Cable
A 400G DAC cable directly connects two 400G ports using copper cabling with transceiver modules integrated at both ends—no separate optics are required.
The 400G DAC cable supports distances up to 5 meters, making it perfect for high-speed connections in data centers.
The most common connector type is QSFP-DD (Quad Small Form Factor Pluggable Double Density). Variants may include QSFP-DD to QSFP-DD, or hybrid options such as QSFP-DD to 2x 200G QSFP56.
Not always. While QSFP-DD is a standard, compatibility depends on the vendor’s hardware and firmware. It’s essential to verify compatibility or request vendor-specific compatibility lists before purchase.
Yes, 400G DAC cables with QSFP-DD modules are typically hot-swappable, meaning they can be inserted or removed without powering down the device, provided the equipment supports hot-swapping.
You need devices that support 400G QSFP-DD ports, proper cooling, and power. Check your hardware specs and ensure your infrastructure supports 400G bandwidth and connector types.
The 400G QSFP-DD DAC cable is ideal for server-to-switch high-speed connections, providing reliable, low-latency performance.
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