# DAC cable CBO QSFP28-DAC-3M 3 m compatible with QNAP QSFP28 ports, passive direct attach copper cable

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-3m-qn-bl--4466864
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-3M-QN-BL
**EAN:** 4063232102078
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 134.49 €
**Prices and availability valid until:** 2026-08-05 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-qn-bl--4466864

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.08.2026 | free |
| Pickup points | 06.08.2026 | 1.89 EUR |
| Courier delivery to door | 06.08.2026 | 4.99 EUR |

## Summary description

3-meter DAC cable CBO QSFP28-DAC-3M is a passive direct attach copper connection compatible with QNAP QSFP28 ports. Designed for short-reach high-speed links, it provides a plug-and-play 3 m copper connection for switches, storage and network appliances with QSFP28 interfaces. Benefits include low latency, reduced power compared with optical transceivers and easy installation in racks and network closets.

## Long description

The DAC cable CBO QSFP28-DAC-3M is a 3-meter passive direct attach copper connection compatible with QNAP QSFP28 ports. It is intended for short-reach, high-speed links between switches, storage arrays and network appliances using QSFP28 interfaces. The cable provides a straightforward plug-and-play copper link that reduces power consumption and latency compared with optical transceivers while simplifying installation in racks and network closets.
Advantages
This passive direct attach copper cable offers low latency and low power operation because it eliminates the need for separate optical modules and transceivers. Its 3 m length covers common rack-to-rack and chassis-to-chassis short links without excess cable slack. The QSFP28 connector profile ensures compatibility with devices that accept QSFP28 ports and supports high data rates typical for 100GbE and related applications. The cable’s passive construction also leads to lower cost of ownership for short-distance connections.
Suitable for
Short-reach links between switches and routers in data center racks
Direct connections between storage systems and network appliances with QSFP28 ports
Top-of-rack to aggregation switch cabling within the same room or cabinet
High-bandwidth server-to-switch connections requiring minimal latency
Key specifications
Connector type: QSFP28 to QSFP28 compatible
Cable type: passive direct attach copper (DAC)
Length: 3 meters
Designed for short-reach, high-speed links (suitable for 100GbE-class applications)
Power profile: low power compared with optical transceivers due to passive design
Installation: rack and network closet friendly, plug-and-play operation
How to use
Install the DAC cable by inserting each QSFP28 connector into the corresponding QSFP28 port on the devices to be connected. Ensure both devices are powered down or follow hot-plug guidelines provided by the hardware vendor if live insertion is supported. Align the connector latch and seat it until it clicks into place. Verify link status on the connected devices and check for any port-specific configuration required by the switch or storage appliance.
Usage recommendations
For optimal performance, use this 3 m passive DAC cable for connections within the same rack or adjacent racks to avoid unnecessary signal attenuation. Avoid sharp bends and mechanical strain on the cable; maintain the manufacturer’s minimum bend radius and secure the cable to prevent movement. Confirm that the connected devices support passive QSFP28 DACs and consult device documentation for any port compatibility notes.

## 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 03.08.2026 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

https://aio.lv/img/cache/product/4466864/59858139_large.webp