# Direct Attach Cable Digitus 40G QSFP+ to 4XSFP+ 1m

**URL:** https://aio.lv/en/product--digitus-dn-81321--5695925
**Data updated:** 2025-12-30 06:00 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** DIGITUS
**Manufacturer code:** DN-81321
**EAN:** 4016032484981
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 59.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 49.58 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--digitus-dn-81321--5695925

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

The Digitus 40G QSFP+ to 4XSFP+ Direct Attach Cable (1m) is designed for high-speed data transmission. It features a QSFP+ connector on one end and four SFP+ connectors on the other, allowing for flexible connectivity options. Ideal for data centers and high-performance computing environments, this cable supports 40G Ethernet and is perfect for connecting switches and servers. Its 1-meter length ensures easy installation in tight spaces, while the durable construction guarantees reliable performance.

## Long description

The Digitus Direct Attach Cable 40G QSFP+ to 4xSFP+ (1 m, model DN-81321) is a passive breakout cable designed for high-density data centre connections. It provides one QSFP+ connector that breaks out to four SFP+ connectors, supporting 40G Ethernet and interoperability between 40G and 4×10G links. The cable is intended for short-range interconnects such as switch-to-switch, switch-to-server or server-to-storage within racks and row-based topologies.
Advantages
This breakout DAC offers high signal integrity and a compact 1 m length for convenient routing in dense rack environments. It operates from a single +3.3 V power supply and supports per-channel data rates up to 3.125 Gbps, enabling reliable 40G to 4×10G conversion. The cable is compliant with the SFF-8436 specification and is specified for operation in temperatures from 0 ℃ to 70 ℃.
Suitable for
 Data centre switch-to-switch connections
 Switch-to-server links in high-performance computing
 Server-to-NAS or storage interconnects within racks
 Short-reach breakout applications requiring 40G to 4×10G interoperability
Key specifications
 Model: DN-81321
 Type: Passive QSFP+ to 4×SFP+ direct attach cable (DAC)
 Length: 1 m
 Standards: Compliant with SFF-8436
 Data rate per channel: Up to 3.125 Gbps
 Aggregate: 40G Ethernet (supports 40G ↔ 4×10G interoperability)
 Power: Single +3.3 V supply
 Operating temperature: 0 ℃ to 70 ℃
How to use
Connect the QSFP+ end to a host or switch QSFP+ port and insert the four SFP+ ends into the corresponding SFP+ ports on the receiving devices. Ensure ports are rated for direct-attach copper if required and that the connected equipment supports the intended 40G or 10G modes. Route the 1 m cable without sharp bends and secure it to avoid strain on the connectors. Verify link status and speed settings on the connected hardware after installation.
Usage recommendations
Use this 1 m DN-81321 breakout DAC for short-reach, high-density connections inside racks or short patching between adjacent devices. Avoid exposure to temperatures outside the specified 0 ℃–70 ℃ range and prevent excessive tensile force or tight bends to maintain electrical performance and connector integrity.

## Specifications

| Feature | Value |
|---|---|
| Storage temperature (T-T) | -40 - 85 |
| Package weight | 166.667 g |
| Plug and Play | Yes |
| Operating temperature (T-T) | 0 - 70 |
| Cable length | 1 m |
| Data transfer rate | 10.3125 Gbit/s |
| Product colour | Black |
| Country of origin | China |
| Package depth | 260 mm |
| Package height | 30 mm |
| Package width | 260 mm |
| Connector 1 | QSFP+ |
| Connector 2 | 4x SFP+ |
| Connector 1 gender | Male |
| Connector 2 gender | Male |
| Quantity per pack | 1 pc(s) |
| Package volume | 2028 cm³ |
| UK Trade Tariff code | 85176200 |

## FAQ

### How much does the Direct Attach Cable Digitus 40G QSFP+ to 4XSFP+ cost, and is it available for purchase?

The price is 59.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 22 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 01.07.2026 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, Bank cards on-line, Apple Pay, Google Pay. 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 DIGITUS 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 DIGITUS 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

### Where can I download the instructions for Direct Attach Cable Digitus 40G QSFP+ to 4XSFP+?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/5695925/54604275_large.webp