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

**URL:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-2m-sw-bl--10894193
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-2M-SW-BL
**EAN:** 4063232122809
**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-sw-bl--10894193

## 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 direct attach breakout cable. It features a QSFP28 connector on one end and four SFP28 connectors on the other, allowing for high-speed data transfer at 25G per channel. With a length of 2 meters and AWG26 construction, this cable is designed for efficient performance in data centers and networking environments. Its passive design ensures low latency and reduced power consumption, making it an ideal choice for high-bandwidth applications.

## Long description

The BlueLAN QSFP28-4SFP28-DAC-2M is a passive direct attach breakout cable that converts a single QSFP28 interface into four 25G SFP28 channels. Designed for short-reach, high-bandwidth interconnects, this 2 meter cable supports 100GBASE-CR4 via four independent 25G lanes and uses AWG26 conductors to maintain signal integrity. Its passive construction provides low latency and minimal power overhead, suitable for top-of-rack switches, server uplinks and high-density patching within racks.
Advantages
This BlueOptics breakout cable delivers four native 25G channels from a single QSFP28 port without additional transceivers, reducing hardware complexity and cost. The passive design lowers power consumption and avoids active components that can introduce heat or failure points. A 2 m fixed length simplifies cable management in data center rows and cabinets while AWG26 wiring ensures reliable electrical performance for short-reach interconnects.
Suitable for
 High-density switch-to-switch connections in data centers
 Server uplinks from QSFP28 ports to multiple 25G SFP28 ports
 Top-of-rack and end-of-row deployments requiring 100G to 4×25G breakout
 Short-reach patching within racks and equipment cabinets
Key specifications
 Connector A: QSFP28 (breakout end)
 Connector B: 4 × SFP28
 Aggregate data rate: 100 Gbps (4 × 25 Gbps lanes)
 Standard supported: 100GBASE-CR4 / 25G per lane
 Length: 2 meters
 Cable construction: AWG26
 Design: Passive direct attach copper breakout
 Typical application: Short-reach copper interconnects in racks
How to use
Install the QSFP28 plug into the source device's QSFP28 port and insert each SFP28 plug into the corresponding 25G SFP28 ports on the destination devices. Ensure devices support direct attach breakout operation and that link speeds and lane mapping are configured according to switch or host vendor documentation. Handle connectors by the housing and avoid excessive bending near the termination points to preserve signal integrity.
Usage recommendations
Use this 2 m passive breakout cable for intra-rack and short inter-rack connections where 100G to 4×25G conversion is required. Confirm vendor compatibility for passive DAC cables on both the QSFP28 and SFP28 ports; limit installation to environments within the cable's recommended temperature and mechanical stress limits to maintain reliable operation.

## 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