# Direct Attach Copper (DAC) Cable CBO QSFP28-DAC-3M 3 m Passive for QSFP28 ports

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-3m-ci-bl--4466842
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-3M-CI-BL
**EAN:** 4063232101859
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 134.49 €
**Prices and availability valid until:** 2026-08-03 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-ci-bl--4466842

## 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

CBO QSFP28-DAC-3M is a 3-meter passive Direct Attach Copper (DAC) cable designed for QSFP28 ports. It provides a short-reach, low-latency copper interconnect between compatible QSFP28 networking equipment, ideal for switch-to-switch or switch-to-server links in racks and data center topologies. No transceivers required — plug-and-play physical connection for 100GbE or other QSFP28-supported interfaces, offering cost-effective, low-power connectivity within the same rack or adjacent racks.

## Long description

The BlueOptics CBO QSFP28-DAC-3M is a 3-meter passive Direct Attach Copper (DAC) cable designed for QSFP28 ports. It provides a short-reach physical connection for 100GbE and other QSFP28-supported interfaces without the need for separate transceivers. The cable is intended for low-latency, low-power interconnects inside racks or between adjacent racks, enabling direct switch-to-switch or switch-to-server links in data centre and high-density networking environments.
Advantages
This passive DAC cable offers plug-and-play installation and eliminates the cost and power consumption associated with optical transceivers. The fixed copper assembly provides predictable latency and reliable electrical performance for short-reach connections. With an industry-standard QSFP28 form factor, the cable is compatible with equipment that supports QSFP28 copper direct-attach links, simplifying deployment in top-of-rack and middle-of-row configurations.
Suitable for
 Short-reach 100 Gigabit Ethernet links within a rack
 Switch-to-switch interconnects in data centres
 Switch-to-server connections where QSFP28 ports are available
 High-density rack deployments requiring low-latency cabling
Key specifications
 Length: 3 m
 Cable type: Passive Direct Attach Copper (DAC)
 Connector type: QSFP28 to QSFP28
 Supported interface: 100GbE and other QSFP28-supported protocols
 Typical use: Short-reach intra-rack or adjacent-rack connectivity
 Power profile: Passive, no active electronics in the cable
How to use
Insert each QSFP28 connector into the corresponding QSFP28 port on your networking devices, ensuring the connectors are fully engaged and the module latches if present. Ensure both devices recognise QSFP28 copper links and are configured for the intended speed and interface. No additional optics or transceiver modules are required; the cable functions as a direct electrical connection for supported link speeds. Inspect connectors for debris before installation and avoid excessive bending or tension on the cable during routing.
Usage recommendations
Use this 3 m passive DAC cable for short-distance links inside the same rack or between adjacent racks. Avoid using passive copper DACs for runs longer than the recommended 3 m and verify device compatibility with QSFP28 copper connections to ensure proper link negotiation and performance.

## 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 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/4466842/59856730_large.webp