# Network Cable BlueLAN Q28-4S28-DAC-2M QSFP28 to 4xSFP28 100GBASE-CR4 2m Blue

**URL:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-2m-ao-bl--10894263
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-2M-AO-BL
**EAN:** 4063232122571
**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-ao-bl--10894263

## 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 Q28-4S28-DAC-2M is a passive 100GBASE-CR4 QSFP28 to 4x25GBASE-CR SFP28 Direct Attach Breakout Cable. It features a length of 2 meters and an AWG26 specification, ensuring high-speed data transmission with minimal signal loss. Ideal for data centers and high-performance computing environments, this cable offers reliable connectivity and is designed for easy installation.

## Long description

The BlueLAN Q28-4S28-DAC-2M QSFP28 to 4xSFP28 100GBASE-CR4 2m Blue is a passive direct attach breakout cable designed for short-reach, high-bandwidth interconnects. With a 2 meter length and AWG26 conductor specification, this cable splits a single QSFP28 100G interface into four 25G SFP28 channels, providing low-latency connectivity for top-of-rack switches, aggregation devices and server ports. The passive design requires no external power or transceivers, simplifying rack deployments and reducing component count.
Advantages
This breakout DAC offers predictable electrical performance with minimal signal loss across a 2 m link, facilitating reliable 100G to 4×25G connectivity. The AWG26 conductors ensure adequate signal integrity for short-range links while keeping cable diameter and weight low. As a passive cable, it reduces power consumption compared with active optical transceivers and eliminates the need for separate SFP28 transceiver modules. The integrated QSFP28 and four SFP28 plugs are keyed for secure insertion and straightforward installation.
Suitable for
 Top-of-rack switch to server connections in data centers
 High-performance computing clusters requiring 100G breakout to 25G lanes
 Network aggregation and spine-leaf fabrics with short-reach links
 Lab and test environments for validating multi-lane 25G configurations
Key specifications
 Connector configuration: QSFP28 to 4 × SFP28
 Nominal data rate: 100GBASE-CR4 total (4 × 25GBASE-CR)
 Cable type: Passive Direct Attach Breakout Cable (DAC)
 Length: 2 meters
 Conductor: AWG26
 Application: Short-reach copper interconnect for racks and switches
How to use
Select compatible QSFP28 and SFP28 ports on your switch or server that support 100GBASE-CR4 to 4×25GBASE-CR breakout operation. Insert the QSFP28 end into the 100G host port and route the cable to the destination device, then insert each SFP28 plug into the corresponding 25G ports. Ensure ports are powered down or disabled if your equipment vendor recommends this for hot-plugging. After physical connection, verify lane mapping and link status in the device management interface and adjust switch configuration if required for breakout mode.
Usage recommendations
Use this cable for short-distance rack and row interconnects within the same equipment room; avoid running it alongside high-power electrical lines to minimize potential interference. Confirm switch and server firmware support for QSFP28-to-4×SFP28 breakout operation and check port settings after installation. For longer distances or environments requiring optical isolation, consider active or optical transceiver alternatives.

## FAQ

### How much does the Network Cable BlueLAN Q28-4S28-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