
NSComm 400G PAM4 QSFP-DD to QSFP-DD Direct Attach PVC Copper Cable, up to 3m
400G PAM4 QSFP-DD to QSFP-DD Direct Attach Copper Cable (DAC), PVC, Passive, up to 3 m (10 ft)
Overview
The NSComm 400G PAM4 QSFP-DD to QSFP-DD Direct Attach Copper Cable (DAC) is a cost-effective, ultra-low latency solution for 400 Gigabit Ethernet short-reach interconnects in hyperscale data centers and high-performance computing clusters. Built with twinax copper cable and a durable PVC jacket, it delivers 400 Gbps of bandwidth across 8×50 Gbps PAM4 lanes, making it ideal for top-of-rack (ToR) and middle-of-row (MoR) deployments.
The passive DAC supports lengths up to 3 m (10 ft) with negligible power draw, while active DACs extend reach up to 5 m (16 ft) at ≤ 4 W per end. This design ensures excellent EMI immunity, consistent latency, and significant cost savings compared to optical transceivers.
Compatible Brands
The NSComm 400G QSFP-DD DAC is validated for compatibility with devices from Cisco, Huawei, Juniper, Arista, Dell and Nvidia.
Need help confirming compatibility with your hardware? [Contact Us Now] for tailored support.
Key Specifications
| Specification | Details |
|---|---|
| Vendor Name | NSComm |
| Product Type | 400G PAM4 QSFP-DD to QSFP-DD Direct Attach Copper Cable (DAC) |
| Data Rate | 400 Gbps (8×50 Gbps PAM4 lanes) |
| Cable Type | Twinax Copper, PVC Jacket, Passive/Active |
| Max Cable Distance | Passive: up to 3 m (10 ft); Active: up to 5 m (16 ft) |
| Conductor AWG Options | 30 AWG (≤ 2 m), 26 AWG (≤ 3 m), 24 AWG (active ≤ 5 m) |
| Connector Type | QSFP-DD to QSFP-DD |
| Power Consumption | Passive ≈ 0 W, Active ≤ 4 W |
| Temperature Range | 0 °C to 70 °C |
| Standards Compliance | QSFP-DD MSA (SFF-8679), IEEE 802.3bs, RoHS |
| Applications | 400G switch-to-switch, server uplinks, spine-leaf aggregation |
Why Choose NS 400G QSFP-DD DAC?
-
Ultra-high bandwidth: 400 Gbps across 8×50 Gbps PAM4 lanes.
-
Cost-effective: Lower cost than optical transceivers and AOCs.
-
Ultra-low latency: Direct copper path with no optical conversion.
-
Energy efficiency: Passive consumes no power; active ≤ 4 W.
-
Broad compatibility: Tested with all major switch and server vendors.
Length Options
Standard stocked lengths:
1 m (3 ft), 2 m (7 ft), 3 m (10 ft)
Extended (active) lengths:
5 m (16 ft)
More Details
Quality Certifications










Warranty
100% Low Price Guarantee
Network-switch.com provides high-quality products at low wholesale prices
100% Quality Assurance
All items are ORIGINAL and GENUINE only.
Item conditions are "New Sealed". They are fully tested by Certified CCIE / HCIE / RCNP Engineers.
Free Technical Support
Our FREE Expert Consultancy Support is over the phone, by chat, by email or by login remotely.
100% Money Back Guarantee
You can contact our customer service team to exchange or return any product that you bought from us.
Standard Warranty Policy
Original New Sealed Enterprise Hardware: 3 Years
Original New Sealed Consumer Devices: 1 Year
The Support Contacts
If your NSComm products failed, you must contact your sales representative to verify product failure. If the problem still can't correct by remote support methods i.e. email or phone support, the RMA procedure will issue.
Original: $113.00
-70%$113.00
$33.90More Images




NSComm 400G PAM4 QSFP-DD to QSFP-DD Direct Attach PVC Copper Cable, up to 3m
400G PAM4 QSFP-DD to QSFP-DD Direct Attach Copper Cable (DAC), PVC, Passive, up to 3 m (10 ft)
Overview
The NSComm 400G PAM4 QSFP-DD to QSFP-DD Direct Attach Copper Cable (DAC) is a cost-effective, ultra-low latency solution for 400 Gigabit Ethernet short-reach interconnects in hyperscale data centers and high-performance computing clusters. Built with twinax copper cable and a durable PVC jacket, it delivers 400 Gbps of bandwidth across 8×50 Gbps PAM4 lanes, making it ideal for top-of-rack (ToR) and middle-of-row (MoR) deployments.
The passive DAC supports lengths up to 3 m (10 ft) with negligible power draw, while active DACs extend reach up to 5 m (16 ft) at ≤ 4 W per end. This design ensures excellent EMI immunity, consistent latency, and significant cost savings compared to optical transceivers.
Compatible Brands
The NSComm 400G QSFP-DD DAC is validated for compatibility with devices from Cisco, Huawei, Juniper, Arista, Dell and Nvidia.
Need help confirming compatibility with your hardware? [Contact Us Now] for tailored support.
Key Specifications
| Specification | Details |
|---|---|
| Vendor Name | NSComm |
| Product Type | 400G PAM4 QSFP-DD to QSFP-DD Direct Attach Copper Cable (DAC) |
| Data Rate | 400 Gbps (8×50 Gbps PAM4 lanes) |
| Cable Type | Twinax Copper, PVC Jacket, Passive/Active |
| Max Cable Distance | Passive: up to 3 m (10 ft); Active: up to 5 m (16 ft) |
| Conductor AWG Options | 30 AWG (≤ 2 m), 26 AWG (≤ 3 m), 24 AWG (active ≤ 5 m) |
| Connector Type | QSFP-DD to QSFP-DD |
| Power Consumption | Passive ≈ 0 W, Active ≤ 4 W |
| Temperature Range | 0 °C to 70 °C |
| Standards Compliance | QSFP-DD MSA (SFF-8679), IEEE 802.3bs, RoHS |
| Applications | 400G switch-to-switch, server uplinks, spine-leaf aggregation |
Why Choose NS 400G QSFP-DD DAC?
-
Ultra-high bandwidth: 400 Gbps across 8×50 Gbps PAM4 lanes.
-
Cost-effective: Lower cost than optical transceivers and AOCs.
-
Ultra-low latency: Direct copper path with no optical conversion.
-
Energy efficiency: Passive consumes no power; active ≤ 4 W.
-
Broad compatibility: Tested with all major switch and server vendors.
Length Options
Standard stocked lengths:
1 m (3 ft), 2 m (7 ft), 3 m (10 ft)
Extended (active) lengths:
5 m (16 ft)
More Details
Quality Certifications










Warranty
100% Low Price Guarantee
Network-switch.com provides high-quality products at low wholesale prices
100% Quality Assurance
All items are ORIGINAL and GENUINE only.
Item conditions are "New Sealed". They are fully tested by Certified CCIE / HCIE / RCNP Engineers.
Free Technical Support
Our FREE Expert Consultancy Support is over the phone, by chat, by email or by login remotely.
100% Money Back Guarantee
You can contact our customer service team to exchange or return any product that you bought from us.
Standard Warranty Policy
Original New Sealed Enterprise Hardware: 3 Years
Original New Sealed Consumer Devices: 1 Year
The Support Contacts
If your NSComm products failed, you must contact your sales representative to verify product failure. If the problem still can't correct by remote support methods i.e. email or phone support, the RMA procedure will issue.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
400G PAM4 QSFP-DD to QSFP-DD Direct Attach Copper Cable (DAC), PVC, Passive, up to 3 m (10 ft)
Overview
The NSComm 400G PAM4 QSFP-DD to QSFP-DD Direct Attach Copper Cable (DAC) is a cost-effective, ultra-low latency solution for 400 Gigabit Ethernet short-reach interconnects in hyperscale data centers and high-performance computing clusters. Built with twinax copper cable and a durable PVC jacket, it delivers 400 Gbps of bandwidth across 8×50 Gbps PAM4 lanes, making it ideal for top-of-rack (ToR) and middle-of-row (MoR) deployments.
The passive DAC supports lengths up to 3 m (10 ft) with negligible power draw, while active DACs extend reach up to 5 m (16 ft) at ≤ 4 W per end. This design ensures excellent EMI immunity, consistent latency, and significant cost savings compared to optical transceivers.
Compatible Brands
The NSComm 400G QSFP-DD DAC is validated for compatibility with devices from Cisco, Huawei, Juniper, Arista, Dell and Nvidia.
Need help confirming compatibility with your hardware? [Contact Us Now] for tailored support.
Key Specifications
| Specification | Details |
|---|---|
| Vendor Name | NSComm |
| Product Type | 400G PAM4 QSFP-DD to QSFP-DD Direct Attach Copper Cable (DAC) |
| Data Rate | 400 Gbps (8×50 Gbps PAM4 lanes) |
| Cable Type | Twinax Copper, PVC Jacket, Passive/Active |
| Max Cable Distance | Passive: up to 3 m (10 ft); Active: up to 5 m (16 ft) |
| Conductor AWG Options | 30 AWG (≤ 2 m), 26 AWG (≤ 3 m), 24 AWG (active ≤ 5 m) |
| Connector Type | QSFP-DD to QSFP-DD |
| Power Consumption | Passive ≈ 0 W, Active ≤ 4 W |
| Temperature Range | 0 °C to 70 °C |
| Standards Compliance | QSFP-DD MSA (SFF-8679), IEEE 802.3bs, RoHS |
| Applications | 400G switch-to-switch, server uplinks, spine-leaf aggregation |
Why Choose NS 400G QSFP-DD DAC?
-
Ultra-high bandwidth: 400 Gbps across 8×50 Gbps PAM4 lanes.
-
Cost-effective: Lower cost than optical transceivers and AOCs.
-
Ultra-low latency: Direct copper path with no optical conversion.
-
Energy efficiency: Passive consumes no power; active ≤ 4 W.
-
Broad compatibility: Tested with all major switch and server vendors.
Length Options
Standard stocked lengths:
1 m (3 ft), 2 m (7 ft), 3 m (10 ft)
Extended (active) lengths:
5 m (16 ft)
More Details
Quality Certifications










Warranty
100% Low Price Guarantee
Network-switch.com provides high-quality products at low wholesale prices
100% Quality Assurance
All items are ORIGINAL and GENUINE only.
Item conditions are "New Sealed". They are fully tested by Certified CCIE / HCIE / RCNP Engineers.
Free Technical Support
Our FREE Expert Consultancy Support is over the phone, by chat, by email or by login remotely.
100% Money Back Guarantee
You can contact our customer service team to exchange or return any product that you bought from us.
Standard Warranty Policy
Original New Sealed Enterprise Hardware: 3 Years
Original New Sealed Consumer Devices: 1 Year
The Support Contacts
If your NSComm products failed, you must contact your sales representative to verify product failure. If the problem still can't correct by remote support methods i.e. email or phone support, the RMA procedure will issue.





