# Network Cable BlueLAN QSFP-4SFP25G-CU2M QSFP28 to 4x25GBASE-CR 2M Black

**URL:** https://aio.lv/en/product--blueoptics-qsfp-4sfp25g-cu2m-bl--10894297
**Data updated:** 2026-03-07 18:09 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP-4SFP25G-CU2M-BL
**EAN:** 4063232641423
**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-qsfp-4sfp25g-cu2m-bl--10894297

## 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 QSFP-4SFP25G-CU2M is a passive 100GBASE-CR4 cable designed for high-speed data transmission. It features a QSFP28 connector on one end and four SFP28 connectors on the other, allowing for a direct attach breakout. With a length of 2 meters and AWG26 gauge, this cable ensures reliable performance and minimal signal loss, making it ideal for data centers and high-performance computing environments.

## Long description

The BlueLAN QSFP-4SFP25G-CU2M is a passive 100GBASE-CR4 direct-attach breakout cable with a QSFP28 connector on one end and four SFP28 connectors on the other. At 2 meters length and AWG26 gauge, this cable supports aggregation and cross-connect applications between 100G ports and four separate 25G ports. It is intended for short-reach, high-density interconnects in racks and data center topologies where low latency and predictable signal integrity are required.
Advantages
This passive breakout cable delivers a cost-effective solution for converting a single 100G QSFP28 port into four independent 25G links without intermediate transceivers. Its AWG26 conductor construction and 2 m length reduce insertion loss and crosstalk for reliable electrical performance. The direct-attach design simplifies cabling, reduces space requirements and minimizes power consumption compared with optical transceivers and active DAC options.
Suitable for
 Connecting 100G QSFP28 ports to four 25G SFP28 ports in switches and servers
 Top-of-rack and end-of-row short-reach data center links
 High-performance computing clusters requiring multiple 25G lanes
 Equipment interconnects where passive, low-latency cabling is preferred
Key specifications
 Topology: QSFP28 to 4 × SFP28 passive breakout
 Data rate: 100G aggregated (4 × 25G lanes)
 Length: 2 meters
 Conductor gauge: AWG26
 Cable type: Direct attach copper (passive)
 Typical use: Short-reach electrical interconnects
 Color: Black
How to use
Insert the QSFP28 connector into the 100G QSFP28 port and plug each SFP28 connector into the corresponding 25G ports on the target devices. Ensure ports are rated for passive DAC usage and that link settings (speed, lanes) on switches and servers are configured to accept 25G connections or auto-negotiation is enabled. Avoid excessive bending near the connector ends and route the cable to prevent mechanical strain.
Usage recommendations
Use this cable for short-distance, high-density interconnects inside racks and between adjacent racks. Verify compatibility with your switch and server vendor for passive DAC support, and keep cable length to the specified 2 m to maintain signal integrity. For longer runs or where vendor compatibility is uncertain, consider optical transceivers or active DAC alternatives.

## FAQ

### How much does the Network Cable BlueLAN QSFP-4SFP25G-CU2M 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