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

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-dac-3m-fr-bl--4466848
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-DAC-3M-FR-BL
**EAN:** 4063232101903
**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-fr-bl--4466848

## 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 copper Direct Attach Cable (DAC) designed for QSFP28 ports. It provides a fixed, low-latency connection for short-reach 100GbE links between switches, routers or network adapters. Suitable for data center top-of-rack and server interconnects, the cable simplifies installation and reduces power compared with active optics.

## Long description

CBO QSFP28-DAC-3M is a 3-metre passive copper Direct Attach Cable engineered for QSFP28 ports to support short-reach 100GbE links. The fixed-attached twin-ended design provides a simple, low-latency physical connection between compatible switches, routers and network adapters without the need for separate transceivers. Intended for data centre top-of-rack and server interconnects, this cable delivers a compact, low-power alternative to active optical modules for distances up to 3 metres.
Advantages
The passive copper construction offers minimal latency and consistent signal integrity for short-distance connections. Being a Direct Attach Cable means easy installation with no additional optics or transceivers required, reducing component count and simplifying inventory. The 3 m length balances reach and cable management needs in rack environments while consuming no additional power compared with active solutions, making it suitable for dense deployments where energy efficiency and predictable performance are important.
Suitable for
 Top-of-rack switch-to-switch 100GbE connections
 Server-to-switch interconnects in data centres
 High-performance computing clusters requiring short low-latency links
 Patch panels or direct port-to-port connections within the same rack or adjacent racks
Key specifications
 Interface type: QSFP28 to QSFP28
 Cable type: Passive copper Direct Attach Cable (DAC)
 Data rate support: 100 Gigabit Ethernet (100GbE)
 Length: 3 metres
 Latency: very low, cable-implemented direct connection
 Typical use environment: short-reach, rack-level data centre links
How to use
Insert each QSFP28 connector into the corresponding QSFP28 port on the network devices until the latch engages. Confirm that both devices recognize the link through their management interfaces or LED indicators. For reliable operation, route the cable to avoid sharp bends and mechanical strain and secure it according to rack management practices. If necessary, power-cycle or reconfigure port settings to ensure link negotiation completes successfully.
Usage recommendations
Use this passive 3 m DAC for short, direct 100GbE connections inside racks or between adjacent racks. Avoid exceeding the recommended bend radius and protect connectors from dust when not in use. For longer distances or when optical isolation is required, consider active optical transceivers instead.

## FAQ

### How much does the DAC cable CBO QSFP28-DAC-3M 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 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/4466848/59859858_large.webp