# BlueOptics QSFP-DD Direct Attach Cable 400G-DACP-QSFPDD2M-BL, QSFP-DD, 400GBASE-CR4, 26 AWG, 2 m

**URL:** https://aio.lv/en/product--blueoptics-400g-dacp-qsfpdd2m-bl--12266988
**Data updated:** 2026-04-14 22:37 (EEST)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** 400G-DACP-QSFPDD2M-BL
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 260.99 €
**Prices and availability valid until:** 2026-08-24 23:59
**Price without VAT (21%):** 215.69 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-400g-dacp-qsfpdd2m-bl--12266988

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.08.2026 | free |
| Pickup points | 27.08.2026 | 1.79 EUR |
| Courier delivery to door | 27.08.2026 | 4.99 EUR |

## Summary description

BlueOptics QSFP-DD Direct Attach Cable (model 400G-DACP-QSFPDD2M-BL) is a 2 m passive copper twinax designed for 400GBASE-CR4 and InfiniBand interconnects. It features QSFP-DD connectors, 26 AWG conductors and supports 400 Gbit/s data rates for short-reach server-to-switch or switch-to-switch links in data centers and high-performance networking environments.

## Long description

BlueOptics QSFP-DD Direct Attach Cable 400G-DACP-QSFPDD2M-BL is a 2 m passive copper twinax assembly engineered for short-reach 400G connections. The cable features QSFP-DD connectors on both ends, 26 AWG conductors and supports the 400GBASE-CR4 electrical specification for server-to-switch and switch-to-switch links in data centres and high-performance networking racks. It is intended for environments that require high-density, low-latency interconnects where a direct attach copper solution is appropriate.
Advantages
The cable provides a cost-effective, low-power way to achieve 400 Gbit/s connectivity over short distances without active optics. With QSFP-DD form-factor compatibility and 26 AWG twinax construction, it offers predictable electrical performance for 400GBASE-CR4 applications while simplifying cabling and reducing port power consumption. Its 2 m length balances reach and signal integrity for typical rack and adjacent-rack interconnects.
Suitable for
Short-reach 400G server-to-switch interconnects
Switch-to-switch links inside the same rack or between adjacent racks
High-density top-of-rack (ToR) deployments that use QSFP-DD ports
InfiniBand environments requiring passive twinax connections
When it may not be suitable
This passive copper direct attach cable is not designed for long-reach connections or for environments that require active optical transceivers. It will not replace fibre optic runs needed for distances beyond a few metres, and it does not provide the electrical isolation or EMI performance of fibre. Use of the cable requires compatible QSFP-DD ports on both endpoints; it may not function with legacy or non-compatible interfaces.
Key specifications
Connector type: QSFP-DD on both ends
Data rate: 400 Gbit/s (supports 400GBASE-CR4)
Cable type: Passive copper twinax
Conductor gauge: 26 AWG
Length: 2 metres
How to use
Ensure both devices have QSFP-DD ports that support 400GBASE-CR4 and are powered down or follow hot-plug guidance from the equipment vendor. Align the QSFP-DD connector with the port and insert until it seats; engage any retention mechanism provided. Verify link status through switch or host management interfaces and confirm the expected lane and speed parameters. For removal, release the connector latch and pull straight out to avoid stressing the cable or port.
What to consider before purchase
Confirm both endpoints have compatible QSFP-DD ports and support 400GBASE-CR4
Verify the required cable length and whether 2 m meets rack layout and airflow needs
Check that passive twinax is acceptable for your distance and EMI environment compared with optics
Usage recommendations
Use this QSFP-DD direct attach cable for short-distance, high-bandwidth links inside racks or between adjacent racks where a passive copper solution is acceptable. Avoid bending below the manufacturer’s minimum bend radius, route the cable to minimize stress on connectors, and monitor port temperature and link status after installation to ensure stable 400G operation.

## FAQ

### How much does the BlueOptics QSFP-DD Direct Attach Cable 400G 2m cost, and is it available for purchase?

The price is 260.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 19 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 24.08.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All BlueOptics products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized BlueOptics service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty