# Direct Attach Cable BlueOptics QSFP-DD 400G 1m, 400GBASE-CR4, QSFP-DD to QSFP-DD, 26 AWG, Infiniband

**URL:** https://aio.lv/en/product--blueoptics-400g-dacp-qsfpdd1m-bl--12100851
**Data updated:** 2026-03-17 09:06 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** 400G-DACP-QSFPDD1M-BL
**EAN:** 4063232349473
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 222.49 €
**Prices and availability valid until:** 2026-08-26 23:59
**Price without VAT (21%):** 183.88 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-400g-dacp-qsfpdd1m-bl--12100851

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 25.08.2026 | free |
| Pickup points | 28.08.2026 | 1.79 EUR |
| Courier delivery to door | 28.08.2026 | 4.99 EUR |

## Summary description

Copper direct attach cable (DAC) by BlueOptics with QSFP-DD connectors, designed for 400GBASE-CR4 links. Length 1 meter, 26 AWG conductors, supports Infiniband and 400G Ethernet interconnects between QSFP-DD ports. Suitable for short-reach server-to-switch and switch-to-switch connections in data centers and high-performance computing environments.

## Long description

BlueOptics Direct Attach Cable QSFP-DD 400G 1m is a copper twin-ax cable assembly with QSFP-DD connectors at both ends, engineered for 400GBASE-CR4 links. With a 1 meter length and 26 AWG conductors, this DAC provides a direct electrical connection between QSFP-DD ports for short-reach server-to-switch and switch-to-switch interconnects. The cable supports 400G Ethernet and Infiniband protocols and is intended for use in data center racks and high-performance computing clusters where low-latency, high-bandwidth horizontal cabling is required.
Advantages
The cable offers low insertion loss and a compact QSFP-DD connector format that enables high-density port deployment. Its 26 AWG construction balances signal integrity and flexibility for routing within racks. As a passive copper DAC, it consumes no additional power for signal conversion and provides deterministic latency suitable for latency-sensitive applications. The fixed 1 m length reduces excess slack and simplifies cable management in dense environments.
Suitable for
 Short-reach connections between servers and top-of-rack or leaf switches
 High-performance computing clusters using Infiniband or 400G Ethernet
 Switch-to-switch stacking or fabric interconnects within the same rack or adjacent racks
 Environments requiring high port density and low-latency links
Key specifications
 Data rate: 400 Gbps (compatible with 400GBASE-CR4)
 Connector type: QSFP-DD to QSFP-DD (double density QSFP form factor)
 Cable length: 1 meter
 Conductor gauge: 26 AWG twin-ax copper
 Supported protocols: 400G Ethernet, Infiniband
 Passive copper direct attach cable suitable for short-reach links
How to use
Install the cable by firmly inserting each QSFP-DD connector into the corresponding QSFP-DD port on network devices until the latch engages. Confirm link status on both devices and verify negotiated speed and protocol through the device management interface. Route the cable along rack pathways to avoid sharp bends; maintain recommended bend radius for twin-ax copper to preserve signal integrity. For replacement, power down or follow hot-swap procedures advised by the equipment manufacturer if required.
Usage recommendations
 Use this 1 m DAC for short, direct interconnects inside racks or between adjacent racks. Avoid exceeding recommended bend radius and keep the cable away from strong EMI sources where possible. For longer runs or environments requiring electrical isolation, consider using active optical cables or fiber solutions instead.

## FAQ

### How much does the BlueOptics QSFP-DD 400G DAC 1m cost, and is it available for purchase?

The price is 222.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 21 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 25.08.2026 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