# DAC cable BlueOptics DAC-Q56DD-400G-2M-BL 2m QSFP-DD Male/Male

**URL:** https://aio.lv/en/product--blueoptics-dac-q56dd-400g-2m-bl--10716053
**Data updated:** 2026-03-07 17:59 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** DAC-Q56DD-400G-2M-BL
**EAN:** 4063232289038
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 309.99 €
**Prices and availability valid until:** 2026-08-15 23:59
**Price without VAT (21%):** 256.19 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-dac-q56dd-400g-2m-bl--10716053

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.08.2026 | free |
| Pickup points | 18.08.2026 | 1.89 EUR |
| Courier delivery to door | 18.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics DAC-Q56DD-400G-2M-BL is a 2m DAC cable with QSFP-DD connectors. It features male/male connectors and is designed for high-speed data transmission in data centers and networking applications.

## Long description

The BlueOptics DAC-Q56DD-400G-2M-BL is a 2 m direct attach copper (DAC) cable with QSFP-DD male-to-male connectors designed for short-reach, high-bandwidth interconnects in data center and enterprise networking environments. This cable supports high-speed links up to 400 Gbps and is built for low-latency, energy-efficient connections between switches, routers, servers and network interface cards that accept QSFP-DD modules.
Advantages
The cable provides a cost-effective, low-power alternative to active optical modules for short distances, delivering reliable 400 Gbps throughput with minimal signal loss. Its QSFP-DD male connectors ensure compatibility with a wide range of QSFP-DD ports and the fixed 2 m length simplifies cabling planning in rack-to-rack or top-of-rack installations. The passive/active DAC construction reduces heat generation and eliminates the need for separate transceivers, helping to lower total system power consumption.
Suitable for
 High-bandwidth switch-to-switch interconnects in data centers
 Server-to-top-of-rack switch connections
 Short-reach links inside wiring closets and equipment racks
 Environments requiring low-latency, high-throughput connections
Key specifications
 Connector type: QSFP-DD male to QSFP-DD male
 Cable type: Direct attach copper (DAC)
 Maximum data rate: 400 Gbps
 Length: 2 m
 Typical use: Short-reach rack and cabinet interconnects
 Latency: Low, suitable for high-performance networking
How to use
Install the DAC cable by inserting each QSFP-DD male connector firmly into the corresponding QSFP-DD port on the network devices until the latch engages. Ensure devices are powered off or that hot-plug support is enabled as per the equipment manufacturer's guidance. Verify link status in the devices' management interfaces and confirm the negotiated 400 Gbps link if supported by both ports. Route the cable to avoid sharp bends and mechanical strain, maintaining the specified minimum bend radius to prevent damage.
Usage recommendations
Use this 2 m QSFP-DD DAC cable for short-distance, high-speed interconnects where optical transceivers are not required. Check compatibility with your switch or server vendor for QSFP-DD passive/active DAC support and adhere to rack cable management best practices to ensure airflow and prevent connector stress.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.15 kg |
| Package weight | 160 g |
| Operating temperature (T-T) | 0 - 70 |
| Cable length | 2 m |
| Data transfer rate | 400000 Gbit/s |
| Product colour | Black |
| Connector 1 | QSFP-DD |
| Connector 2 | QSFP-DD |
| AWG wire size | 26 |
| Fastening type | Push–pull |
| Cable shape | Round |
| Sustainability compliance | Yes |
| Compliance certificates | CE, Federal Communications Commission (FCC), RoHS |
| InfiniBand protocol | Yes |

## FAQ

### How much does the DAC cable BlueOptics DAC-Q56DD-400G-2M-BL cost, and is it available for purchase?

The price is 309.99 € (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 13.08.2026 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

## Image

https://aio.lv/img/cache/product/10716053/64435716_large.webp