# 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-mr-bl--10894288
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-2M-MR-BL
**EAN:** 4063232122687
**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-mr-bl--10894288

## 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. With a length of 2 meters and AWG26, it ensures high-speed data transmission with minimal latency. Ideal for data centers and high-performance computing environments, this cable provides reliable connectivity and is easy to install, making it a perfect choice for network expansion.

## Long description

The BlueLAN Q28-4S28-DAC-2M is a passive 100GBASE-CR4 QSFP28 to 4x25GBASE-CR SFP28 direct attach breakout cable designed for short-reach, high-bandwidth interconnects. With a total length of 2 meters and AWG26 conductor gauge, this cable enables multi-lane 100 Gbps links to be split into four independent 25 Gbps SFP28 connections. It is intended for use in data center topologies, server-to-switch connections and within high-performance computing racks where low latency and consistent signal integrity are required.
Advantages
This passive DAC cable offers low latency and low power usage because it requires no active signal conditioning. The AWG26 conductors and factory-terminated QSFP28 and SFP28 connectors provide stable electrical characteristics and predictable performance across short distances. The breakout design simplifies cabling between QSFP28 ports and multiple SFP28 ports without additional transceivers, reducing equipment complexity and setup time.
Suitable for
 Connecting a QSFP28 port on a switch or NIC to four SFP28 ports on servers or aggregation devices
 Short-reach links within data center racks and between adjacent racks
 High-performance computing clusters requiring parallel 25 Gbps lanes
 Environments prioritizing minimal latency and reduced power consumption
Key specifications
 Interface: QSFP28 to 4 × SFP28 breakout
 Data rate: 100 Gbps aggregated (4 × 25 Gbps lanes)
 Cable type: Passive direct attach copper (DAC)
 Length: 2 meters
 Conductor gauge: AWG26
 Standard compatibility: 100GBASE-CR4 / 25GBASE-CR
 Connector construction: Factory-terminated QSFP28 and SFP28 plugs
How to use
Install the QSFP28 plug into the QSFP28 port of the switch or network adapter, and insert each SFP28 plug into the corresponding SFP28 ports on target devices. Ensure devices are powered down or follow hot-plug guidance from your hardware vendor when connecting or disconnecting. Verify link status on both ends after connection and configure the network interfaces as required by your operating system or switch firmware to enable the 25 Gbps lanes.
Usage recommendations
Use this passive breakout cable for short-reach connections up to 2 meters inside racks or between adjacent racks. Avoid sharp bends and excessive pulling tension to maintain signal integrity. For longer distances or environments with higher EMI, consider using active DACs or optical transceivers and fiber cabling.

## 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