# Direct Attach Copper (DAC) Cable CBO QSFP28-DAC-3M 3 m compatible with QSFP28 ports

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-3m-le-bl--4466854
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-3M-LE-BL
**EAN:** 4063232101972
**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-le-bl--4466854

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.07.2026 | free |
| Pickup points | 03.08.2026 | 1.89 EUR |
| Courier delivery to door | 03.08.2026 | 4.99 EUR |

## Summary description

3-meter Direct Attach Copper (DAC) cable by CBO, model QSFP28-DAC-3M, designed for direct connection between devices with QSFP28 ports. Passive twinax construction provides low-latency, short-reach interconnect suitable for data center switching, NIC-to-switch links and server uplinks. Ideal for high-bandwidth 100GbE links where a fixed-length copper cable is preferred for cost-effective, power-efficient short-distance connectivity.

## Long description

Direct Attach Copper (DAC) Cable CBO QSFP28-DAC-3M is a 3-meter passive twinax cable designed for direct connection between devices equipped with QSFP28 ports. Engineered for short-reach, high-bandwidth links, this DAC cable supports 100GbE interconnects while delivering low latency and predictable performance. The fixed-length copper assembly is suitable for data center topologies where cost efficiency and power savings are priorities compared with active optical solutions.
Advantages
The QSFP28-DAC-3M provides a low-cost and power-efficient option for 100GbE short-reach connections. Its passive twinax design ensures minimal latency and consistent signal integrity across the 3 m span. The fixed, factory-terminated cable simplifies installation and reduces the need for transceivers, lowering overall system complexity. Compatible with equipment that accepts QSFP28 form-factor copper assemblies, it offers a durable, rack-friendly interconnect for dense networking environments.
Suitable for
 Switch-to-switch links within the same rack or adjacent racks
 NIC-to-switch connections for servers requiring 100GbE bandwidth
 Server uplinks and aggregation in data center top-of-rack deployments
 High-bandwidth, short-distance connections where low latency is required
Key specifications
 Length: 3 meters
 Connector type: QSFP28 to QSFP28 (direct attach copper)
 Cable type: Passive twinax copper
 Supported data rate: 100 Gigabit Ethernet (100GbE)
 Typical use: Short-reach, intra-rack and adjacent-rack interconnects
 Form factor: QSFP28 compatible
How to use
Ensure both devices have QSFP28 ports rated for passive copper assemblies before installation. With power to the devices off or in a safe maintenance state, align each QSFP28 connector with the port and insert until the retention mechanism engages. After physical connection, power on the devices and verify link negotiation and interface status in the network equipment management tools. Monitor link indicators and system logs to confirm stable 100GbE operation. For removal, follow vendor guidance to disengage the retention mechanism and withdraw the connector carefully to avoid damage to ports.
Usage recommendations
Use this 3 m DAC cable for short-distance, high-bandwidth links inside racks or between adjacent racks. Maintain bend radius and avoid tight kinks; keep the cable clear of airflow obstructions and high-heat sources. Confirm compatibility with your switch or NIC vendor compatibility lists where applicable and verify link behavior after installation.

## FAQ

### How much does the CBO QSFP28-DAC-3M 3 m 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 29.07.2026 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

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