# 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-ch-bl--4466841
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-3M-CH-BL
**EAN:** 4063232101842
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 134.49 €
**Prices and availability valid until:** 2026-07-28 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-ch-bl--4466841

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

CBO QSFP28-DAC-3M is a 3-meter direct-attach copper (DAC) cable with QSFP28 connectors designed for 100 Gigabit Ethernet links. Compatible with Chelsio systems, it provides a low-latency, cost-effective connection between QSFP28 ports for short-reach interconnects in data centers, switches and servers, simplifying rack-level cabling and reducing power consumption.

## Long description

CBO QSFP28-DAC-3M is a 3 m direct-attach copper (DAC) cable with QSFP28 connectors engineered for 100 Gigabit Ethernet links. Designed for short-reach interconnects in data centers, switches and servers, the cable offers a direct copper connection between QSFP28 ports that simplifies rack-level cabling and reduces power consumption compared to optical transceivers. It is compatible with Chelsio systems and other devices that accept standard QSFP28 DAC assemblies, providing a stable physical layer for high-throughput, low-latency links.
Advantages
The DAC cable provides a low-latency, low-power alternative to optical modules for short distances and eliminates the need for separate transceivers and patch optical cables. With a fixed 3 m length and QSFP28 connectors at both ends, it ensures predictable signal integrity and straightforward installation in adjacent racks or within the same rack. The copper construction reduces overall system cost and heat dissipation while delivering the bandwidth required for 100GbE connections.
Suitable for
Short-reach 100 Gigabit Ethernet links between switches and top-of-rack devices
Adjacent rack or within-rack connections in data centers
Server-to-switch interconnects where QSFP28 ports are available
High-density rack cabling scenarios requiring low power and low latency
Key specifications
Connector type: QSFP28 to QSFP28
Cable length: 3 meters
Supported data rate: 100 Gigabit Ethernet
Medium: Direct-attach copper (DAC)
Typical use: Short-reach, rack-level interconnects
Latency: Low, suitable for latency-sensitive applications
How to use
Install the cable by inserting each QSFP28 connector into the corresponding QSFP28 port on the network devices until the connector latches. Ensure both devices support QSFP28 DAC connectivity and that ports are configured for 100GbE operation. Route the cable to avoid sharp bends and mechanical stress; maintain minimum bend radius as recommended by the equipment vendor. After physical installation, verify link status and perform any required interface configuration on the connected devices.
Usage recommendations
Use this 3 m DAC cable for short-distance connections within the same rack or between adjacent racks to maximize cost and power efficiency. Avoid using it for long-reach links; for distances beyond rack-level interconnects, consider optical transceivers and fiber. Handle connectors by the housing to prevent damage and store the cable in a dry, dust-free environment when not in use.

## FAQ

### How much does the CBO QSFP28-DAC-3M 3 m QSFP28 DAC cable 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 27.07.2026 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/4466841/59860597_large.webp