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

**URL:** https://aio.lv/en/product--blueoptics-q28-4s28-dac-2m-mt-bl--10894287
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-4S28-DAC-2M-MT-BL
**EAN:** 4063232122694
**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-mt-bl--10894287

## 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 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. With a length of 2 meters and AWG26 gauge, it ensures reliable performance and minimal signal loss. Ideal for data centers and high-performance computing environments.

## Long description

The BlueLAN QSFP28-4SFP28-DAC-2M is a passive direct-attach breakout cable designed to provide a 100GBASE-CR4 connection on one end and four separate 25G SFP28 connections on the other. With a 2 meter length and AWG26 wire gauge, this Black cable supports high-speed short-reach links between QSFP28 ports and multiple SFP28 ports in rack servers, switches and aggregation equipment. The cable is intended for use in dense networking environments where reliable, low-latency interconnects are required.
Advantages
The cable delivers a compact, low-power alternative to active optical modules by using a passive copper breakout that minimizes latency and does not require external power. Its integrated QSFP28 to 4×SFP28 configuration simplifies connectivity between 100G and 25G ports without additional transceivers. The AWG26 conductor specification and 2 m length balance signal integrity and flexibility for typical top-of-rack and middle-of-row deployments.
Suitable for
 Interconnecting 100G QSFP28 ports to multiple 25G SFP28 ports in switches and routers
 Top-of-rack and spine-leaf architectures in data centers
 High-performance computing clusters requiring high-bandwidth short links
 Equipment staging and lab environments for testing 25G/100G interfaces
Key specifications
 Form factor: QSFP28 on one end, 4 × SFP28 on the other
 Supported link rates: 100GBASE-CR4 (single end) and 4 × 25GBASE-CR (breakout)
 Length: 2 meters
 Conductor gauge: AWG26
 Cable color: Black
 Type: Passive direct-attach copper breakout cable
How to use
Connect the QSFP28 connector to the 100G-capable port on a switch or server. Insert each SFP28 connector into the corresponding 25G ports of target devices. Ensure both ends are fully seated and aligned with port guides to avoid mechanical strain. No additional power or transceivers are required for standard passive operation; the host ports must support passive DAC breakout connections and be configured for the intended 100G-to-4×25G mapping in device firmware or switch software.
Usage recommendations
Use the cable within short-reach topologies and keep cable runs within the specified 2 m length to preserve signal integrity. Avoid tight bends and excessive pulling force; maintain the minimum bend radius specified by equipment manufacturers. Verify compatibility with host hardware and firmware for passive DAC operation before deployment, and test link status after installation to confirm expected 25G lanes are active.

## 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