Switch Series & Supported Models
Browse common switch series and models supported for each brand.
400G OSFP Flat Top to 400G QSFP-DD Passive Direct Attach Copper Twinax Cable
P/N: O400-QDD-C SKU: 32002
US$134.00
Compatible Brands:
MSA Standard
NVIDIA(Ethernet)
Length:
1m (3ft)
1.5m (5ft)
2m (7ft)
3m (10ft)
Length Price Table
| Length | Price |
|---|---|
| 1m (3ft) | US$134.00 |
| 1.5m (5ft) | US$152.00 |
| 2m (7ft) | US$170.00 |
| 3m (10ft) | US$194.00 |
Quantity:
-
30-day return and refund
-
3-year warranty
-
Available for delivery within 2 days
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Free shipping for orders over
Products Highlight
- <0.1W Power Per End
- Near-Zero Latency
- 40.5mm Minimum Bend Radius
- 4×100G PAM4 Electrical Interface
- Low Insertion Loss
- OSFP & QSFP-DD MSA Compliant
Specifications
| Connector Type | OSFP(Flat Top) to QSFP-DD | Data Rate | 425Gbps to 425Gbps |
|---|---|---|---|
| Media | Copper | Cable Type | DAC |
| Cable Length | 0.5m~2.5m(2ft~8ft) | Outer Diameter | 0.5m~1m@AWG 30 1.5m~3m@AWG 28 |
| Jacket Material | PVC | Minimum Bend Radius | 23mm@AWG 30 25mm@AWG 28 |
| Power Consumption | ≤0.1W | Case Operating Temperature | 0 to 70°C (32 to 158°F) |
| Protocol | 400 Gigabit Ethernet 400G RoCE | Application | Swicth to Switch Switch to NIC Other Links |
Applications
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Features
Resources
FAQ
Ask a QuestionFind answers to common questions about our products.
Will it work with any 400G QSFP-DD port?
Not always. Some 400G QSFP-DD ports use 8×50G PAM4, while this cable is intended for 4×100G PAM4 operation, so the host port mode must be checked before purchase.
Can this cable be used with NVIDIA SN4700 QSFP-DD ports?
It depends on the lane configuration supported by the QSFP-DD port. If the port only supports 8×50G PAM4 for 400G, this DAC is not the right match; a validated optical transceiver and fiber solution may be more suitable.
How long can this 400G OSFP to QSFP-DD passive DAC be?
This type of passive copper cable is recommended for short-reach connections, typically up to 3m. For longer links, an AOC or optical transceiver solution is usually a better choice.
What does “OSFP Flat Top” mean for installation?
The Flat Top OSFP end is commonly used with OSFP network cards or server-side ports where a finned heat sink is not required on the cable. Please match the OSFP top type with the cage design of your device.
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Questions & Answers Title
Ask a questionThe cable was installed and tested right after delivery, and the link came up quickly. Build quality feels solid, and it works well for short-reach interconnects.
We used it between a switch and a server NIC, and it has been running steadily so far. The cable is a bit stiff, but still manageable inside the rack.
We bought it for high-speed links in our lab setup, and it has been stable with no link drops. It is also much more cost-friendly than the original cable option.