# DAC Cable CBO QSFP28-DAC-3M 3 m Passive Direct Attach Twinax for QSFP28 ports

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-3m-ql-bl--4466863
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-3M-QL-BL
**EAN:** 4063232102061
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 134.49 €
**Prices and availability valid until:** 2026-07-30 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-ql-bl--4466863

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 28.07.2026 | free |
| Pickup points | 31.07.2026 | 1.89 EUR |
| Courier delivery to door | 31.07.2026 | 4.99 EUR |

## Summary description

CBO QSFP28-DAC-3M is a 3-meter passive Direct Attach Cable (DAC) with QSFP28 connectors, designed for short-reach high-speed links between QSFP28 ports. This twinax cable provides a cost-effective, low-latency connection for switches, routers and servers supporting QSFP28 interfaces. Suitable for data center top-of-rack and switch-to-switch interconnects where short copper links are required.

## Long description

CBO QSFP28-DAC-3M is a 3-meter passive Direct Attach Twinax cable with QSFP28 connectors, engineered for short-reach 100GbE links between devices that support QSFP28 ports. The cable delivers a low-latency copper connection suitable for top-of-rack, switch-to-switch and server interconnects in data center environments where cost efficiency and compact cabling are priorities.
Advantages
The passive twinax construction offers a reliable, energy-efficient link without active signal conditioning, reducing power consumption and simplifying deployment. At 3 meters length it provides flexible routing within racks and between adjacent racks while maintaining signal integrity for 100 Gbit/s links. QSFP28 connectors ensure compatibility with equipment that accepts QSFP28 interfaces and enable plug-and-play installation.
Suitable for
Top-of-rack connections in data centers
Switch-to-switch interconnects over short distances
Server to switch uplinks where QSFP28 ports are available
High-density rack deployments requiring compact copper cabling
Key specifications
Connector type: QSFP28 to QSFP28
Cable type: Passive twinax copper
Supported data rate: up to 100 Gbit/s
Length: 3 m
Typical use: short-reach interconnects in data center environments
How to use
Insert each QSFP28 connector firmly into the matching QSFP28 port on the devices to be connected. Ensure devices are powered down or follow hot-plugging guidelines from your hardware vendor before insertion or removal. Route the cable to avoid sharp bends and excessive tension; maintain the specified bend radius to preserve performance. After physical installation, verify link status in the network equipment management interface and confirm negotiated speed and link integrity.
Usage recommendations
Use passive DACs like this for short copper runs where cost and low latency are priorities; for longer distances consider active optical options. Keep the cable free from kinks, and avoid bundling with high-heat sources. Confirm compatibility with your hardware vendor’s QSFP28 port specifications to ensure proper link negotiation.

## 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 — 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 28.07.2026 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/4466863/59853798_large.webp