# Direct Attach Copper (DAC) Cable CBO QSFP28-DAC-3M 3 m – QSFP28 to QSFP28, passive 3-meter interconnect

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-3m-ps-bl--4466861
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-3M-PS-BL
**EAN:** 4063232102054
**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-ps-bl--4466861

## 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 Copper (DAC) cable with QSFP28 connectors at both ends, designed for short-reach high-speed interconnects between QSFP28 ports. It supports direct server-to-switch or switch-to-switch links in data centers and networking racks, offering a cost-effective, low-latency connection for 100GbE applications where fiber transceivers are not required.

## Long description

CBO QSFP28-DAC-3M is a 3-meter passive Direct Attach Copper (DAC) cable featuring QSFP28 connectors on both ends, engineered for short-reach high-speed interconnects between QSFP28 ports. The cable provides a direct copper connection for 100GbE links and is intended for server-to-switch and switch-to-switch connections within racks and data center topologies. As a passive solution, it eliminates the need for separate optical transceivers while offering low latency and predictable signal integrity for short-distance links.
Advantages
The passive QSFP28-DAC-3M delivers a cost-efficient alternative to fiber-based connections for short distances, reducing both purchase and operational expenses. Its fixed 3 m length simplifies cabling planning in rack environments and ensures consistent electrical characteristics without additional power consumption for active components. The QSFP28 connectors on both ends provide compatibility with standard QSFP28 ports and support typical 100GbE applications that require low latency and stable throughput.
Suitable for
Short-reach 100 Gigabit Ethernet links within racks or between adjacent racks
Direct server-to-switch or switch-to-switch interconnects in data centers
High-density networking environments where low latency and predictable performance are required
Cost-sensitive deployments that do not require optical transceivers
Key specifications
Connector type: QSFP28 to QSFP28
Cable type: Passive Direct Attach Copper (DAC)
Length: 3 meters
Supported link speed: 100 Gigabit Ethernet (100GbE)
Typical use: short-reach interconnects within racks and between adjacent racks
Latency: low, passive copper connection
How to use
Install the QSFP28-DAC-3M by inserting each QSFP28 connector firmly into the QSFP28 port on the networking devices to be linked. Ensure that devices are powered down or that hot-plug procedures recommended by the equipment manufacturer are followed when connecting or disconnecting to avoid port damage. After physical connection, verify link status through the device management interface and configure port settings (speed, lane mapping, and protocols) as required by the network design. No additional transceivers or fiber patching is necessary.
Usage recommendations
Use the cable within the specified rack and data center environments for distances up to 3 meters and avoid tight bends or mechanical stress near the connectors. Confirm QSFP28 port compatibility and supported 100GbE modes on both endpoints before deployment. For longer runs or where electrical isolation is required, consider optical transceivers and fiber cabling instead of passive DACs.

## 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 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/4466861/59858136_large.webp