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

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-3m-so-bl--4466866
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-3M-SO-BL
**EAN:** 4063232102122
**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-so-bl--4466866

## 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

Passive copper Direct Attach Cable (DAC) by CBO, model QSFP28-DAC-3M, 3 meters length. Designed for QSFP28 ports, it provides a cost-effective, low-latency wired connection between compatible network devices such as switches, routers and servers. Suitable for short-reach 100GbE interconnects in data centers and rack-to-rack links, offering plug-and-play simplicity and reduced power consumption compared to active optics.

## Long description

Passive copper Direct Attach Cable (DAC) CBO QSFP28-DAC-3M from BlueOptics is a 3 meter, QSFP28-compatible twinax cable designed for short-reach 100GbE connections. The cable provides a direct wired link between QSFP28 ports on switches, routers and servers, delivering low latency and straightforward plug-and-play operation without the need for transceivers or optical modules. Its passive copper construction limits power consumption and keeps overall link cost down, making it appropriate for rack-to-rack and intra-rack interconnects in data center environments.
Advantages
The CBO QSFP28-DAC-3M offers reliable electrical performance for short-distance 100GbE links, with minimal latency and low insertion loss due to its passive twinax design. Installation is simple and requires no additional configuration or optical transceivers, enabling fast deployment and predictable behaviour in compatible networking equipment. The cable’s construction reduces operating power compared with active optical solutions and simplifies inventory management by eliminating separate transceiver modules.
Suitable for
 Short-reach 100 Gigabit Ethernet connections between switches and servers
 Rack-to-rack and intra-rack interconnects in data centers
 High-density patching scenarios where QSFP28 ports are available
 Environments prioritizing low latency and reduced power consumption
Key specifications
 Connector type: QSFP28 to QSFP28 compatible twinax cable
 Length: 3 meters
 Media: Passive copper (twinax)
 Nominal data rate: 100 Gigabit Ethernet (short-reach)
 Usage: Direct attach for rack and data center interconnects
How to use
Connect each end of the QSFP28-DAC-3M cable to matching QSFP28 ports on the network devices you intend to link. Ensure both ports support passive DAC connections and that device firmware or operating system recognizes QSFP28 passive cables. No additional configuration or transceiver modules are required; the link typically negotiates automatically. Route the cable to avoid sharp bends and protect it from mechanical strain to maintain signal integrity and reliable operation.
Usage recommendations
Verify compatibility with your switch, router or server vendor documentation for passive QSFP28 cables before deployment, and place the cable in paths that avoid tight bends or compression. For high-density installations, plan port mapping to simplify replacement and troubleshooting. Use the 3 m length for rack-to-rack or short in-rack connections where passive copper offers cost and power advantages over active optics.

## FAQ

### How much does the CBO QSFP28-DAC-3M QSFP28 DAC cable 3 m 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/4466866/59858141_large.webp