# BlueOptics QSFP-DD Direct Attach Cable NDYYYH-0005 400GBASE-CR4 Ethernet 26 AWG 2 m

**URL:** https://aio.lv/en/product--blueoptics-ndyyyh-0005-bl--12266986
**Data updated:** 2026-04-14 22:37 (EEST)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** NDYYYH-0005-BL
**EAN:** 4063232351087
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 260.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 215.69 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-ndyyyh-0005-bl--12266986

## 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

Shielded QSFP-DD direct attach copper cable by BlueOptics, model NDYYYH-0005, supporting 400GBASE-CR4 Ethernet. Constructed with 26 AWG conductors and a 2-meter length, it provides a low-latency, high-bandwidth short-reach connection between QSFP-DD ports for data center switching, aggregation and server interconnects.

## Long description

BlueOptics QSFP-DD Direct Attach Cable NDYYYH-0005 is a shielded twinax copper assembly designed for short-reach 400GBASE-CR4 Ethernet links. With 26 AWG conductors and a 2 m length, this cable connects QSFP-DD ports for switch-to-switch, switch-to-server or aggregation applications in data center environments. The passive direct attach design delivers low latency and predictable electrical performance suitable for high-bandwidth topologies.
Advantages
The cable offers compliant 400GBASE-CR4 signaling in a compact QSFP-DD form factor, providing a cost-efficient alternative to optical transceivers for short links. Its shielded twinax construction reduces electromagnetic interference and supports stable high-speed transmission. The 2 m length and 26 AWG conductor gauge balance flexibility and signal integrity for typical rack or between-rack connections.
Suitable for
 Short-reach interconnects between QSFP-DD Ethernet ports in data center racks
 High-bandwidth switch-to-switch and switch-to-server links
 Aggregation panels and spine-leaf network topologies where 2 m passive copper is sufficient
When it may not be suitable
This passive direct attach cable is intended for short distances; it is not appropriate for long-span fiber replacement or runs exceeding typical 2 m rack-to-rack separations. For environments requiring optical isolation, longer reach, or pluggable transceivers, active optical cables or optical transceivers with fiber cabling should be considered instead.
Key specifications
 Form factor: QSFP-DD to QSFP-DD direct attach copper
 Standard: 400GBASE-CR4 Ethernet signaling
 Conductor gauge: 26 AWG twinax
 Shielding: braided/shielded twinax assembly for EMI protection
 Length: 2 m
 Connector: QSFP-DD compliant plugs on both ends
How to use
Power down or follow hot-swap procedures of your networking hardware if required by the vendor. Align each QSFP-DD connector with the corresponding port and insert until it latches; verify a secure mechanical connection. After installation, confirm link status and speed in the switch or host management interface. For removal, release the latch mechanism and withdraw the connector straight out to avoid damaging the port.
What to consider before purchase
 Compatibility with the QSFP-DD port specifications and vendor-supported passive DACs
 Required link distance—2 m passive copper is intended for short-range connections
 Environmental factors such as rack density and airflow impact around shielded copper assemblies
Usage recommendations
Install in well-ventilated rack areas and avoid tight bends; maintain manufacturer-recommended bend radius. Document connections and test link integrity after installation to ensure 400G operation and proper lane mapping.

## FAQ

### How much does the BlueOptics QSFP-DD NDYYYH-0005 400GBASE-CR4 2 m 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 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