# 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-mv-bl--10894286
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-2M-MV-BL
**EAN:** 4063232122700
**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-mv-bl--10894286

## 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 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 provides high-speed data transmission with reliable performance. Ideal for data centers and high-performance computing environments, this cable ensures efficient connectivity and minimal signal loss, making it a perfect choice for demanding networking applications.

## Long description

The BlueLAN Q28-4S28-DAC-2M is a passive QSFP28 to 4xSFP28 100GBASE-CR4 direct attach breakout cable designed for short-reach, high-bandwidth connections. At 2 meters in length and built with AWG26 conductors, this BlueOptics cable delivers 100 Gbps aggregated throughput via a single QSFP28 connector split into four 25 Gbps SFP28 links. It is intended for reliable, low-latency interconnects within racks and between adjacent racks in data centers and high-performance computing environments.
Advantages
This direct attach cable provides a cost-effective, low-power physical link without the need for active transceivers or separate optical components. Its passive construction reduces heat and power consumption while maintaining signal integrity over the 2 m distance. The breakout design simplifies port mapping by converting one QSFP28 port into four SFP28 ports, enabling flexible deployment of 100G to 25G links. AWG26 wiring supports stable electrical performance and minimal insertion loss for short-reach data center cabling.
Suitable for
 Top-of-rack and end-of-row short-reach connections in data centers
 Direct connections between QSFP28 switches and SFP28 servers or NICs
 High-performance computing clusters requiring low-latency, high-bandwidth links
 Switch-to-switch breakout applications where 100G needs to be split into 4×25G
Key specifications
 Connector types: QSFP28 to 4 × SFP28
 Standard: 100GBASE-CR4 (breakout to 4×25GBASE-CR)
 Length: 2 meters
 Cable gauge: AWG26
 Cable type: Passive direct attach copper (DAC) breakout cable
 Aggregate data rate: 100 Gbps (4 × 25 Gbps)
 Typical use: Short-reach intra-rack and adjacent-rack connections
How to use
Install the cable by inserting the QSFP28 end into the 100G-capable QSFP28 port on the switch or adapter, and insert each SFP28 connector into the corresponding 25G-capable SFP28 ports on target devices. Ensure ports are powered down or follow hot-plug guidelines specified by equipment vendors when connecting or disconnecting. Verify that switch firmware and NIC drivers support passive DAC breakout operation and that port mapping is configured to recognize the four 25G lanes. Route the cable to avoid sharp bends and excessive mechanical stress.
Usage recommendations
Use this passive breakout cable for short cable runs (within the same rack or adjacent racks) where low latency and low power consumption are priorities. Confirm compatibility with your network equipment and check vendor documentation for supported passive DAC connections and any required firmware settings before deployment.

## 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 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