40G QSFP+ to QSFP+ QDR Direct Attach Copper Cable 30AWG Passive 5M
This 40G QSFP+ to QSFP+ passive DAC cable supports QDR 40G Ethernet transmission with 30AWG twinax construction, delivering reliable short-reach connectivity for modern data center networks.
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Description
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Specification
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Features
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Application
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Custom Service
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FAQ
The 40G QSFP+ to QSFP+ QDR direct attach copper cable is designed for high-speed short-reach interconnects in data center and enterprise networking environments. It supports 40G QDR (Quad Data Rate) applications, delivering stable, low-latency performance between QSFP+ ports.
Built with passive twinax copper construction and 30AWG wire gauge, this cable provides an efficient and cost-effective alternative to optical transceivers for short-distance links. It requires no external power and ensures reliable signal integrity for rack-to-rack or adjacent rack connectivity. The 5-meter length makes it suitable for flexible deployment in medium-range intra-data center cabling scenarios.Featured DAC & AOC Cable Solutions
| SKU | Cable Type | Data Rate | Form Factor A | Form Factor B | Wire Type | Length |
| AOC-100GQSFP28-5 | AOC | 100G | QSFP28 | QSFP28 | OM4 Fiber Cable | 5M |
| AOC-10GSFP-10 | AOC | 10G | SFP+ | SFP+ | OM4 Fiber Cable | 10M |
| AOC-25GSFP28-3 | AOC | 25G | SFP28 | SFP28 | OM4 Fiber Cable | 3M |
| AOC-40GQSFP-10 | AOC | 40G | QSFP+ | QSFP+ | OM3 Fiber Cable | 10M |
| AOC-QSFP-10G4SFP-5 | AOC | 40G | QSFP+ | 4*SFP+ | OM3 Fiber Cable | 5M |
| AOC-QSFP28-4SFP28-3 | AOC | 100G | QSFP28 | 4×SFP28 | OM3 Fiber Cable | 3M |
| DAC-100GQSFP28-25G4SFP28-P5 | DAC | 100G | QSFP28 | 4×SFP28 | 24AWG | 5M |
| DAC-100GQSFP28-P3 | DAC | 100G | QSFP28 | QSFP28 | 26AWG | 3M |
| DAC-10GCX4-P05 | DAC | 10G | CX4 | CX4 | 28AWG | 3M |
| DAC-10GSFP-P10 | DAC | 10G | SFP+ | SFP+ | 24AWG | 10M |
| DAC-10GSFP-XFP-A10 | DAC | 10G | SFP+ | XFP | 24AWG | 10M |
| DAC-400GQSFP-P5 | DAC | 400G | QSFP-DD | QSFP-DD | 30AWG | 5M |
| DAC-40GQSFP-P07 | DAC | 40G | QSFP+ | QSFP+ | 28AWG | 7M |
| DAC-QSFP-10G4SFP-P03 | DAC | 40G | QSFP+ | 4 * SFP+ | 30AWG | 3M |
| DAC-SFP-P05 | DAC | 1.25G | SFP | SFP | 30AWG | 5M |
| Cable Type | Passive DAC |
|---|---|
| Connector | QSFP+ to QSFP+ |
| Data Rate | 40G QDR (4x10G lanes) |
| Cable Length | 5 m |
| Wire Gauge | 30AWG |
| Medium | Twinax Copper |
| Power Requirement | Passive (No power needed) |
| Latency | Ultra-low |
| Operating Temperature | 0°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Standards Compliance | IEEE 802.3ba | RoHS |
- QSFP+ to QSFP+ direct attach copper cable
- Supports 40G QDR high-speed transmission
- Passive twinax design (no power required)
- 30AWG wire gauge for flexibility and routing efficiency
- Low latency and stable signal integrity
- Plug-and-play compatibility with QSFP+ ports
- 5m length for flexible rack-to-rack deployment
- Data center interconnects
- Switch-to-switch backbone links
- High-speed server connectivity
- Enterprise and cloud networking infrastructure
- HPC (High-Performance Computing) clusters
- Storage area networks (SAN)
We provide OEM and ODM services for high-speed DAC and AOC cable assemblies. Custom options include cable length, wire gauge (30AWG/26AWG), connector coding, EEPROM programming, branding, and packaging. Both standard and enterprise-grade configurations are available to meet diverse networking requirements.
Customize DAC & AOC High-Speed Cable Solution
| Cable Type | Passive DAC / Active DAC (ACC) / Active Optical Cable (AOC) |
| Form Factor | SFP+ / SFP28 / QSFP+ / QSFP28 / QSFP56 / QSFP-DD / OSFP |
| Data Rate | 10G / 25G / 40G / 50G / 100G / 200G / 400G / 800G |
| Cable Length | 0.5m–15m (DAC) / 1m–100m (AOC) |
| Transmission Medium | Twinax Copper / Multimode Optical Fiber |
| Connector Compatibility | Cisco / NVIDIA / Arista / Juniper / Dell / HPE / Generic Compatible |
| Jacket Type | PVC / LSZH |
| EEPROM Coding | OEM Compatible Programming Available |
| Operating Temperature | Commercial / Industrial Grade |
Q1: What is QDR in 40G QSFP+ cables?
A: QDR (Quad Data Rate) refers to 4x10G lanes used to achieve 40G transmission in QSFP+ systems.
Q2: Is this a passive or active cable?
A: This is a passive DAC cable, meaning it does not require external power for operation.
Q3: What is the advantage of DAC over optical transceivers?
A: DAC cables offer lower cost, lower power consumption, and minimal latency for short-distance connections.
Q4: Is 5m a long distance for passive DAC?
A: 5m is within the typical operating range for high-quality 30AWG passive DAC cables, suitable for intra-data center use.
Q5: Can this cable be used with all QSFP+ devices?
A: It is compatible with standard QSFP+ ports that support 40G Ethernet, subject to device compatibility.
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