# DAC cable CBO QSFP28-DAC-3M 3 m QSFP28 direct-attach copper cable for 100GbE

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-3m-cn-bl--4466843
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-3M-CN-BL
**EAN:** 4063232101873
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 134.49 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 111.15 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qsfp28-dac-3m-cn-bl--4466843

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.07.2026 | free |
| Pickup points | 04.08.2026 | 1.89 EUR |
| Courier delivery to door | 04.08.2026 | 4.99 EUR |

## Summary description

Direct-attach copper (DAC) cable CBO QSFP28-DAC-3M, 3 m length, with QSFP28 connectors compatible with Cumulus systems. Designed for short-reach 100GbE connections between switches, routers and servers in data centers and network racks. Provides low-latency, reliable high-speed links without transceivers, simplifying installation and reducing power consumption.

## Long description

The BlueOptics DAC cable CBO QSFP28-DAC-3M is a 3 m direct-attach copper cable with QSFP28 connectors, engineered for short-reach 100GbE links in data center and rack environments. Compatible with Cumulus systems, this cable provides a direct electrical connection between QSFP28 ports on switches, routers and servers without the need for optical transceivers. Its fixed copper assembly reduces latency and power consumption while simplifying physical installation and port management.
Advantages
The direct-attach copper design offers a cost-effective solution for short-distance 100GbE connections by eliminating separate transceivers and optical modules. With QSFP28-to-QSFP28 connectivity, the cable supports high throughput and low latency suitable for aggregation and spine-leaf topologies. The 3 m length balances reach and cable management inside racks, and the pre-terminated connectors ensure consistent electrical performance and quick deployment.
Suitable for
 Short-reach 100GbE links between top-of-rack switches
 Connections between routers and aggregation switches in data centers
 Server-to-switch high-speed uplinks within the same rack or adjacent racks
 Low-latency network segments in campus or enterprise core networks
Key specifications
 Connector type: QSFP28 to QSFP28
 Cable type: Direct-attach copper (DAC)
 Rated speed: 100 Gigabit Ethernet (100GbE)
 Length: 3 meters
 Application: Short-reach, in-rack and adjacent-rack links
 Power: Passive copper assembly with reduced power consumption compared to optical transceivers
 Latency: Low electrical latency suitable for high-performance switching
How to use
Install the cable by inserting each QSFP28 connector into the corresponding QSFP28 port on the devices until the latch engages. Ensure devices are powered down or follow hot-plug guidance from the equipment manufacturer if live insertion is supported. Verify link status through device indicators or management interfaces. Route the 3 m cable to avoid sharp bends and maintain proper airflow in racks; secure with cable ties or management panels as needed to prevent strain on connectors.
Usage recommendations
Use this direct-attach copper cable for short, high-bandwidth connections where 3 m reach is sufficient. Avoid deploying DAC cables for longer runs beyond recommended distances; for extended links, consider optical transceivers and fiber cabling. Maintain connector cleanliness and inspect latches before insertion to ensure reliable electrical contact and minimize risk of port damage.

## FAQ

### How much does the DAC cable CBO QSFP28-DAC-3M 3 m cost, and is it available for purchase?

The price is 134.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 337 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 30.07.2026 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

## Image

https://aio.lv/img/cache/product/4466843/59858122_large.webp