# Network Cable BlueLAN QSFP28-4SFP28-DAC-2M QSFP28 to 4xSFP28 100GBASE-CR4 2m Blue

**URL:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-2m-fr-bl--10894254
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-2M-FR-BL
**EAN:** 4063232122656
**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-fr-bl--10894254

## 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 QSFP28-4SFP28-DAC-2M is a high-performance passive direct attach breakout cable designed for 100GBASE-CR4 applications. It features a QSFP28 connector on one end and four SFP28 connectors on the other, allowing for efficient data transmission over short distances. With a length of 2 meters and an AWG26 specification, this cable ensures reliable connectivity and minimal signal loss, making it ideal for data centers and high-speed networking environments.

## Long description

The BlueLAN QSFP28-4SFP28-DAC-2M is a passive direct attach breakout cable engineered for 100GBASE-CR4 connectivity. One end terminates in a QSFP28 connector while the other end provides four SFP28 connectors, enabling a single 100 Gbps port to break out into four 25 Gbps links. With a 2 metre length and AWG26 conductors, the cable is intended for short-reach interconnects in high-density networking setups such as data centre top-of-rack and switch-to-switch connections. The design focuses on low insertion loss and predictable signal performance for reliable 100G breakout applications.
Advantages
This breakout cable delivers cost-effective, low-latency connectivity without the need for active transceivers or external power. The QSFP28 to 4×SFP28 configuration simplifies network architecture by consolidating cabling and reducing port usage on aggregation switches. AWG26 conductors and the short 2 m length minimise signal attenuation and crosstalk, while the passive construction reduces heat output and power consumption compared with active DACs.
Suitable for
 Short-reach 100G to 4×25G breakout connections inside racks or between adjacent shelves
 Top-of-rack (ToR) switches to server or leaf switch uplinks
 High-density switch-to-switch patching in data centres and telecom rooms
 Lab and test environments requiring reliable 100G breakout links
Key specifications
 Connector type: QSFP28 to 4×SFP28
 Standard: 100GBASE-CR4 (breakout to 4×25G)
 Length: 2 metres
 Conductor gauge: AWG26
 Cable type: Passive twinax direct attach copper
 Application: Short-reach, in-rack or adjacent-rack links
How to use
Insert the QSFP28 end into the 100G-capable QSFP28 port and connect the four SFP28 ends to the corresponding 25G SFP28 ports on target devices. Ensure devices are powered down or follow hot-plug guidelines from the switch or server vendor where applicable. Verify link status and negotiate speed/firmware settings according to the networking equipment documentation. For breakout operation, configure port mapping on the switch so the QSFP28 port correctly maps to the four SFP28 lanes if required by the platform.
Usage recommendations
Use this 2 m passive DAC for short-distance, high-density connections inside racks or between adjacent racks. Avoid exceeding the specified reach; for longer distances consider active DACs or optical transceivers. Handle connectors carefully to prevent damage to contact surfaces and keep the cable free from sharp bends and excessive strain to maintain signal integrity.

## 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 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