# Direct Attach Copper (DAC) cable CBO DAC-QSFP-40G-3M 40Gbps QSFP+ to QSFP+ 3 m, blue

**URL:** https://aio.lv/en/product--blueoptics-dac-qsfp-40g-3m-bl--4465128
**Data updated:** 2026-02-25 16:30 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** DAC-QSFP-40G-3M-BL
**EAN:** 4063232011844
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 114.99 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 95.03 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-dac-qsfp-40g-3m-bl--4465128

## 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

Passive Direct Attach Copper (DAC) cable by CBO, model DAC-QSFP-40G-3M, provides 40Gbps connectivity between QSFP+ ports over a 3-meter blue copper assembly. Designed for short-reach interconnects in racks and switches, it supports high-throughput links for servers, storage and network equipment while offering low latency and plug-and-play installation without additional optics.

## Long description

The Direct Attach Copper (DAC) cable CBO DAC-QSFP-40G-3M is a passive 40Gbps twin-ax copper assembly with QSFP+ connectors on both ends and a 3 meter length. It provides a direct electrical connection between QSFP+ ports for short-reach interconnects inside racks and between adjacent switches or servers. The cable is factory-terminated, color-coded blue for easy identification and designed for plug-and-play use without the need for optical transceivers.
Advantages
This DAC cable offers a low-latency, high-bandwidth link at 40Gbps suitable for dense data center environments. As a passive copper solution it consumes no additional power for active signal conversion, reduces overall deployment cost compared to optical modules for short distances, and simplifies installation due to its fixed-length, pre-terminated design. The QSFP+ connectors provide reliable mating with standard QSFP+ ports and the robust cable jacket supports frequent handling within rack environments.
Suitable for
Short-reach server-to-switch or switch-to-switch links inside racks
High-throughput connections for storage arrays and blade servers
Top-of-rack and leaf-spine architectures requiring 40Gbps uplinks
Environments where low latency and cost-effective interconnects are required
Key specifications
Data rate: 40 Gbps (aggregate)
Connector type: QSFP+ to QSFP+
Cable type: Passive twin-ax copper assembly
Length: 3 meters
Color: Blue
Typical use: Short-reach, in-rack interconnects
How to use
Ensure compatible QSFP+ ports on both devices and power down equipment if recommended by your hardware vendor. Align the QSFP+ connectors with the ports and insert until the connector latch engages. Verify link status via the host devices or switch management interface. For cable removal, release the connector latch and pull straight to avoid damaging the port. No additional configuration is required for basic electrical connectivity; driver and firmware compatibility should be confirmed for full feature support.
Usage recommendations
Install the DAC cable within the recommended bend radius to avoid stress on the twin-ax cores. Use for connections up to 3 meters where passive copper is supported by the equipment. Avoid routing near high-power cables or sources of electromagnetic interference to maintain signal integrity.

## FAQ

### How much does the DAC cable CBO DAC-QSFP-40G-3M 40Gbps QSFP+ 3 m cost, and is it available for purchase?

The price is 114.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 152 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/4465128/59855129_large.webp