# DAC cable CBO QSFP28-DAC-3M 3 m passive QSFP28 direct-attach copper

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-3m-ee-bl--4466846
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-3M-EE-BL
**EAN:** 4063232101880
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 134.49 €
**Prices and availability valid until:** 2026-08-12 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-ee-bl--4466846

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.08.2026 | free |
| Pickup points | 13.08.2026 | 1.89 EUR |
| Courier delivery to door | 13.08.2026 | 4.99 EUR |

## Summary description

CBO QSFP28-DAC-3M is a 3 meter passive DAC (direct-attach copper) cable with QSFP28 connectors. Designed for short-reach 100GbE connections between switches, routers or servers that accept QSFP28 ports. Provides a low-latency, cost-effective interconnect for data center topologies and cross-connects without need for transceivers.

## Long description

The CBO QSFP28-DAC-3M is a 3 meter passive direct-attach copper (DAC) cable with QSFP28 connectors, engineered for short-reach 100GbE links. It connects devices with QSFP28 ports—such as switches, routers and servers—without separate transceivers, providing a straightforward physical interconnect for data center topologies, aggregation and cross-connects. The cable is intended for installations where low latency, minimal power consumption and cost-effective cabling are priorities.
Advantages
This passive QSFP28 DAC cable offers low latency and reduced power usage compared with optical transceiver-based links because no active electronics are required in the inline cable. Its fixed 3 m length simplifies inventory and deployment for standard rack or short row connections. The QSFP28 connectors ensure compatibility with equipment supporting 100GbE over QSFP28 ports and enable a compact, high-density cabling approach in racks and patch panels.
Suitable for
Short-reach 100 Gigabit Ethernet connections between switches in the same rack or adjacent racks
Direct server-to-switch or server-to-server links where QSFP28 ports are available
Data center aggregation, spine-leaf architectures and Top-of-Rack cross-connects
Key specifications
Connector type: QSFP28 to QSFP28
Cable type: Passive direct-attach copper (DAC)
Length: 3 meters
Nominal data rate: Supports 100 Gigabit Ethernet (100GbE)
Latency: Low latency suitable for high-performance switching environments
Power: Passive design with negligible inline power consumption
Form factor: Compact, high-density QSFP28 footprint for rack installations
How to use
Insert each QSFP28 connector into the corresponding QSFP28 port on the devices to be linked, ensuring the connector latch engages. Use the 3 m length to route the cable between devices in the same rack or adjacent racks, avoiding sharp bends and excessive strain on the connector. After physical connection, verify link status on both devices and configure the ports for 100GbE operation as required by your network equipment. If hot-pluggable support is available, connect or disconnect with devices powered on according to the equipment vendor’s guidance.
Usage recommendations
For reliable operation, maintain bend radius and strain-relief best practices, keep the cable away from high-interference power sources, and verify compatibility with the equipment vendor’s QSFP28 port specifications. Use this passive DAC for short distances within racks or across adjacent racks; for longer runs or where active signal conditioning is required, consider optical transceivers and fibre cabling.

## FAQ

### How much does the CBO QSFP28-DAC-3M 3 m passive 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 — 336 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 10.08.2026 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

## Image

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