# BlueOptics QSFP-DD Direct Attach Cable 400GBASE-CR4 26 AWG Ethernet, 1 m (DDQ+DA0001-BL)

**URL:** https://aio.lv/en/product--blueoptics-ddqda0001-bl--12266985
**Data updated:** 2026-04-14 22:37 (EEST)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** DDQ+DA0001-BL
**EAN:** 4063232351056
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 221.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 183.46 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-ddqda0001-bl--12266985

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

Direct attach copper cable (DAC) BlueOptics QSFP-DD designed for 400GBASE-CR4 links. 26 AWG construction, 1 meter length, supports Ethernet over QSFP-DD interfaces for high-density server, switch and router interconnects. Ideal for short-reach data center connections, low-latency links and high-throughput aggregation.

## Long description

The BlueOptics QSFP-DD Direct Attach Cable 400GBASE-CR4 26 AWG Ethernet, 1 m is a passive direct-attach copper cable designed for short-reach, high-bandwidth interconnections in data centers. Built for QSFP-DD ports and 400GBASE-CR4 links, this 1-meter 26 AWG cable provides a compact, low-latency physical connection between high-density switches, routers and server NICs. The cable supports standard Ethernet signaling over QSFP-DD interfaces and is suitable for aggregation, spine-leaf fabrics and top-of-rack connectivity where distances are limited.
Advantages
This DAC offers reliable 400 Gbps connectivity with minimal power consumption and very low latency compared with optical transceivers. The 26 AWG copper construction provides a balance of flexibility and signal integrity for short-distance links. As a fixed-length direct attach solution, it eliminates the need for separate transceivers and patch cords, simplifying installation and reducing component count in high-density racks.
Suitable for
 Short-reach connections between switches and routers in data center racks
 High-throughput aggregation and spine-leaf network fabrics
 Low-latency server-to-switch links for compute clusters
 High-density port deployments with QSFP-DD interfaces
When it may not be suitable
This 1 m passive copper cable is intended for short-distance links; it is not suitable for extended runs between distant racks or across data halls where optical fiber or active copper solutions are required. Environments that require hot-pluggable transceiver flexibility or longer reach should consider fiber-optic modules or active optical cables instead.
Key specifications
 Interface type: QSFP-DD to QSFP-DD compatible connector
 Supported standard: 400GBASE-CR4 Ethernet signaling
 Cable construction: 26 AWG copper direct attach
 Length: 1 meter
 Application: Short-reach data center interconnects, high-density deployments
How to use
Install the cable by inserting each QSFP-DD connector into the corresponding port on the switch, router or server NIC until the latch engages. Confirm link status through device management interfaces and verify speed and lane mapping according to equipment documentation. No separate transceivers or patch panels are required; the cable functions as a single integrated assembly. For reliable operation, avoid tight bends near the connectors and secure cable routing to prevent strain on ports.
What to consider before purchase
 Confirm device compatibility with QSFP-DD 400GBASE-CR4 passive copper direct attach cables
 Ensure a 1 m length matches the intended rack or cabinet layout
 Verify port speed, lane configuration and firmware support on networking equipment
 Assess whether passive copper is acceptable for thermal and reach requirements
Usage recommendations
Use this BlueOptics QSFP-DD DAC for short, high-bandwidth links inside racks or between adjacent racks. Keep cable runs neat, avoid excessive bending radii, and check device compatibility lists to ensure full 400G operation. For runs beyond a few meters or when hot-swap transceiver flexibility is needed, consider optical alternatives.

## FAQ

### How much does the BlueOptics QSFP-DD 400GBASE-CR4 1m DAC cost, and is it available for purchase?

The price is 221.99 € (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 27.07.2026 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