# DAC cable CBO QSFP28-DAC-3M 3m passive copper QSFP28 to QSFP28

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-3m-pt-bl--4466862
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-3M-PT-BL
**EAN:** 4063232102047
**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-pt-bl--4466862

## 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 passive copper DAC cable with QSFP28 connectors on both ends, designed for short-range high-speed interconnects. It supports direct server-to-switch or switch-to-switch connections in data center and networking environments, offering low latency and power-efficient transmission without external transceivers.

## Long description

CBO QSFP28-DAC-3M is a 3-meter passive copper direct attach cable (DAC) with QSFP28 connectors on both ends, designed for short-range, high-speed interconnects in data center and networking environments. The cable provides a cost-effective link for direct server-to-switch or switch-to-switch connections, supporting 100Gbps lanes through a consolidated QSFP28 interface while reducing the need for separate optical transceivers. Its passive design minimizes power consumption and latency for tightly coupled equipment racks and top-of-rack deployments.
Advantages
The passive copper construction offers low insertion loss and predictable electrical performance for short-reach connections. Because no external transceivers are required, the DAC cable lowers total system cost and reduces heat generation inside network equipment. Its QSFP28-to-QSFP28 form factor simplifies installation and ensures physical compatibility with QSFP28 ports, delivering a compact, low-latency solution for high-throughput links.
Suitable for
 Server-to-switch connections within the same rack or adjacent racks
 Switch-to-switch links in data center aggregation and spine-leaf architectures
 High-performance computing clusters requiring short, high-bandwidth interconnects
 Environments where reduced power consumption and minimal latency are priorities
Key specifications
 Cable type: Passive copper Direct Attach Cable (DAC)
 Connector type: QSFP28 to QSFP28
 Length: 3 meters
 Data rate: Supports 100Gbps per QSFP28 interface (aggregate depending on system)
 Application: Short-reach interconnects for data center and networking equipment
 Form factor: Low-profile QSFP28 module ends for dense port layouts
How to use
Ensure both endpoints support QSFP28 electrical direct-attach connections and that the ports are powered down or follow your equipment vendor’s hot-plug guidance before insertion. Align the QSFP28 connectors with the device ports and insert until the latch engages. Verify link status through the host device management interface or LEDs. For removal, release the retaining latch and pull the module straight out to avoid damaging ports. Route the cable to avoid sharp bends; maintain the manufacturer’s minimum bend radius and prevent undue strain on connectors.
Usage recommendations
Use this passive QSFP28-DAC cable for short, fixed-length connections inside racks or between adjacent racks. Avoid using passive copper DACs for runs beyond the recommended short-reach distances and select active cables or optical transceivers for longer spans or where signal conditioning is required. Verify compatibility with switch and server vendor interoperability lists before deployment and maintain cable routing practices that ensure adequate airflow and mechanical protection.

## FAQ

### How much does the CBO QSFP28-DAC-3M 3m 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/4466862/59855553_large.webp