# Network Cable BlueLAN QSFP28-4SFP28-DAC-2M 100GBASE-CR4 2m Blue

**URL:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-2m-ci-bl--10894260
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-2M-CI-BL
**EAN:** 4063232122601
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 173.49 €
**Prices and availability valid until:** 2026-08-28 23:59
**Price without VAT (21%):** 143.38 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-2m-ci-bl--10894260

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.08.2026 | free |
| Pickup points | 01.09.2026 | 1.79 EUR |
| Courier delivery to door | 01.09.2026 | 4.99 EUR |

## Summary description

The BlueLAN QSFP28-4SFP28-DAC-2M is a passive direct attach breakout cable designed for high-speed data transfer. It features a QSFP28 connector on one end and four SFP28 connectors on the other, supporting 100GBASE-CR4 and 25GBASE-CR standards. With a length of 2 meters and AWG26 gauge, this cable ensures reliable performance and minimal signal loss, making it ideal for data centers and high-performance computing environments.

## Long description

The BlueLAN QSFP28-4SFP28-DAC-2M is a passive direct attach breakout cable engineered for high-speed short-reach connections in data centre and server environments. Featuring a QSFP28 plug on one end and four SFP28 plugs on the other, this 2 metre cable supports 100GBASE-CR4 and 25GBASE-CR link standards, offering a compact and low-latency solution for aggregating or splitting 100 Gbit/s links into four independent 25 Gbit/s connections. Constructed with AWG26 conductors and shielded assemblies, it is designed for reliable signal integrity and efficient thermal behaviour in dense rack deployments.
Advantages
This breakout DAC provides fixed, low-power connectivity without the need for separate transceivers, reducing equipment complexity and operational power consumption. The QSFP28-to-4×SFP28 format enables flexible port mapping between switches, routers and server NICs while maintaining consistent data rates for 100GBASE-CR4 and 25GBASE-CR links. Its 2 m length is suitable for top-of-rack and mid-plane connections, and the cable gauge and shielding help minimise insertion loss and crosstalk over the specified distance.
Suitable for
 Short-reach interconnects between switches and top-of-rack servers
 Breaking out a 100 Gbit/s port into four 25 Gbit/s server or NIC connections
 High-density rack environments and spine-leaf architectures
 Low-latency links for storage, HPC and virtualization hosts
Key specifications
 Connector types: QSFP28 to 4 × SFP28
 Supported link standards: 100GBASE-CR4, 25GBASE-CR
 Cable length: 2 metres
 Conductor gauge: AWG26
 Cable type: Passive direct attach copper breakout
 Typical use: Short-reach, rack-level connectivity
How to use
Install the QSFP28 end into a compatible 100G port on a switch or aggregation device and insert the four SFP28 ends into the corresponding 25G ports on servers, NICs or line cards. Ensure devices are powered down or that the ports support hot-plug insertion per vendor guidance before connecting. Verify link negotiation and speed settings on both ends after insertion; some equipment may require manual configuration to assign the four downstream ports or to enable breakout mode. Route the cable to avoid sharp bends and secure it within the rack to prevent strain on connectors.
Usage recommendations
Use this passive DAC for rack-level, short-distance links where power efficiency and low latency are priorities. Confirm the compatibility of switch and server firmware with QSFP28-to-SFP28 breakout cables, and choose a 2 m length when connecting adjacent racks or devices within the same cabinet to maintain signal integrity.

## FAQ

### How much does the Network Cable BlueLAN QSFP28-4SFP28-DAC-2M cost, and is it available for purchase?

The price is 173.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 50 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 27.08.2026 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