# Network Cable BlueLAN QSFP28-4SFP28-DAC-2M QSFP28 to 4x25GBASE-CR SFP28 Direct Attach Breakout Cable 2m Blue

**URL:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-2m-bc-bl--10894261
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-2M-BC-BL
**EAN:** 4063232122588
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 173.49 €
**Prices and availability valid until:** 2026-08-27 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-bc-bl--10894261

## 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 QSFP28-4SFP28-DAC-2M is a passive 100GBASE-CR4 cable that connects a QSFP28 port to four SFP28 ports. With a length of 2 meters and AWG26 gauge, it ensures high-speed data transmission and low latency. Ideal for data centers and high-performance computing environments, this cable supports 100G Ethernet and is designed for reliable performance in demanding applications.

## Long description

The BlueLAN QSFP28-4SFP28-DAC-2M is a passive 100GBASE-CR4 direct attach breakout cable that links a QSFP28 port to four SFP28 ports. At 2 meters length and constructed with AWG26 conductors, this cable provides a compact, low-latency copper connection for short-reach interconnects in racks and adjacent equipment. The design supports 100G Ethernet by aggregating four 25G lanes and is intended for use where power efficiency and predictable signal timing are required.
Advantages
This breakout DAC offers native support for 4x25G operation through a single QSFP28 connector, minimizing the need for additional transceivers or optical modules. As a passive cable, it consumes no extra power and produces minimal heat compared with active or optical alternatives. The 2 m length is suitable for direct rack-to-rack or within-rack connections, while the AWG26 conductors provide reliable signal integrity for 100GBASE-CR4 links. The blue jacket improves cable identification in dense cabling environments.
Suitable for
 Top-of-rack and end-of-row switch interconnects
 High-performance computing clusters requiring low-latency links
 Server-to-switch or switch-to-switch short-reach connections
 Environments where power efficiency and predictable timing are important
Key specifications
 Connector types: QSFP28 (one end) to 4 × SFP28 (other end)
 Standard supported: 100GBASE-CR4 (aggregated 4 × 25G lanes)
 Length: 2 meters
 Conductor gauge: AWG26
 Cable type: Passive direct attach copper breakout
 Color: Blue jacket for visual identification
How to use
Verify that the devices at each end support QSFP28 and SFP28 direct attach connections and that firmware or switch settings allow breakout operation (1×100G to 4×25G). Insert the QSFP28 end into the 100G port and the four SFP28 ends into the corresponding 25G ports, ensuring firm seating and that connectors are free of debris. Route the cable to avoid sharp bends and place it in cable management trays or panels to prevent strain. After connection, check link status on the devices and, if necessary, configure interfaces according to your network topology.
Usage recommendations
Use the cable for short-reach, high-bandwidth links inside racks or between adjacent racks; avoid exceeding the specified 2 m length for reliable performance. When installing in high-density environments, label both ends and maintain bend radii recommended for AWG26 copper cables. If longer distances or optical isolation are required, consider using optical transceivers and fiber cabling instead.

## 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 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