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

**URL:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-2m-ql-bl--10894280
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-2M-QL-BL
**EAN:** 4063232122793
**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-ql-bl--10894280

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 26.08.2026 | free |
| Pickup points | 31.08.2026 | 1.79 EUR |
| Courier delivery to door | 31.08.2026 | 4.99 EUR |

## Summary description

The BlueLAN Qlogic QSFP28-4SFP28-DAC-2M is a passive Direct Attach Breakout Cable designed for high-speed data transmission. 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 construction, it ensures reliable performance and minimal signal loss, making it ideal for data centers and high-performance computing environments.

## Long description

The BlueLAN Qlogic QSFP28-4SFP28-DAC-2M 100GBASE-CR4 2m Blue is a passive Direct Attach Cable (DAC) engineered for high-density, short-reach connections in data centre and server environments. One end terminates in a QSFP28 connector while the opposite end breaks out to four SFP28 connectors, enabling a single 100G port to connect to multiple 25G ports. Constructed with AWG26 conductors and a 2 metre length, this cable supports 100GBASE-CR4 and 25GBASE-CR signalling with low insertion loss and predictable performance for top-of-rack, aggregation and switch-to-server links.
Advantages
This BlueLAN DAC offers a compact, power-free solution for high-speed interconnects, reducing the need for optical transceivers and active modules in short-reach applications. The QSFP28-to-4xSFP28 breakout design simplifies network architecture by enabling direct 100G-to-4x25G connectivity without additional conversion hardware. With AWG26 wiring and a passive copper build, the cable provides low latency and consistent electrical characteristics suitable for dense rack deployments.
Suitable for
 Top-of-rack switch to server connections in data centres
 High-performance computing clusters requiring short-reach 100G/25G links
 Switch aggregation where a 100G port is distributed to multiple 25G endpoints
 Environments where low-latency, power-saving interconnects are preferred
Key specifications
 Connector types: QSFP28 to 4 × SFP28
 Supported standards: 100GBASE-CR4 and 25GBASE-CR
 Cable length: 2 metres
 Conductor gauge: AWG26
 Construction: Passive direct attach copper breakout cable
 Typical application: Short-reach server and switch interconnects
How to use
Install the QSFP28 end into the 100G-capable QSFP28 port on the source device and insert the four SFP28 ends into the corresponding 25G SFP28 ports on the target devices. Ensure both devices are powered down or follow hot-plug recommendations from the equipment vendor before insertion if supported. Verify link status and speed settings on connected switches or NICs and configure port breakout or lane mapping if required by the host hardware.
Usage recommendations
Use this DAC for rack-level connections up to 2 metres to maintain signal integrity; avoid sharp bends and maintain recommended bend radius. Confirm compatibility with switch and server vendor breakout settings and firmware. For runs longer than 2 metres or where isolation and optical reach are required, consider active DACs or fibre solutions.

## FAQ

### How much does the Network Cable BlueLAN Qlogic 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 26.08.2026 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