# CBO InfiniBand Direct Attach Copper Cable EX-QSFP-40GE-DAC-0.5M-BL 0.5 m

**URL:** https://aio.lv/en/product--blueoptics-ex-qsfp-40ge-dac-05m-bl--4467056
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** EX-QSFP-40GE-DAC-0.5M-BL
**EAN:** 4063232616797
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 78.99 €
**Prices and availability valid until:** 2026-08-11 23:59
**Price without VAT (21%):** 65.28 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-ex-qsfp-40ge-dac-05m-bl--4467056

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.08.2026 | free |
| Pickup points | 13.08.2026 | 1.89 EUR |
| Courier delivery to door | 13.08.2026 | 4.99 EUR |

## Summary description

Direct Attach Copper (DAC) InfiniBand cable by CBO, model EX-QSFP-40GE-DAC-0.5M-BL, length 0.5 m. Equipped with QSFP connectors for 40 Gigabit links, suitable for short-range, high-throughput server-to-switch or switch-to-switch connections in datacenters. Provides low-latency, reliable physical connectivity without transceivers, ideal for rack-level interconnects.

## Long description

CBO InfiniBand Direct Attach Copper Cable EX-QSFP-40GE-DAC-0.5M-BL 0.5 m is a short-length copper link with QSFP connectors designed for 40 Gigabit connections. The cable provides a direct electrical connection between QSFP ports without the need for optical transceivers, enabling low-latency, high-throughput links for rack-level or adjacent-rack interconnects in data centre environments. With a half-metre length, this DAC cable is intended for short-range server-to-switch or switch-to-switch connections where predictable performance and minimal insertion loss are required.
Advantages
The CBO InfiniBand DAC delivers deterministic latency and consistent signal integrity suitable for high-performance computing and storage networks. Its QSFP terminations simplify installation by plugging directly into compatible QSFP ports, reducing component count and power consumption compared with optical modules. The short 0.5 m copper construction reduces cost for short-reach links while offering reliable physical layer connectivity and minimal heat generation in dense rack deployments.
Suitable for
 Server-to-switch connections inside the same rack or adjacent racks
 Switch-to-switch uplinks for leaf and spine topologies at rack level
 High-performance computing and storage clusters requiring low latency
 Short-reach interconnects in data centre and lab environments
Key specifications
 Connector type: QSFP (Quad Small Form-factor Pluggable) compatible
 Rated link speed: 40 Gigabit class data rate
 Cable type: Direct attach copper (DAC) twinax
 Length: 0.5 m
 Latency: low, suitable for latency-sensitive applications
 Power consumption: lower than equivalent optical transceiver plus fiber solutions
How to use
Install the 0.5 m QSFP DAC by inserting each QSFP connector into the corresponding QSFP ports on the devices to be connected, ensuring secure seating and latch engagement. Verify that both endpoints support QSFP direct-attach copper connections and configure the devices for the desired 40 Gigabit link speed if necessary. Monitor link status and performance through the connected devices' management interfaces and ensure cable routing avoids sharp bends and mechanical stress to maintain signal integrity.
Использование и обслуживание
Handle the cable by the connector housings and avoid pulling on the cable jacket. For reliable operation, keep the cable free from kinks and excessive twisting and maintain appropriate rack airflow around densely populated QSFP ports.

## FAQ

### How much does the CBO InfiniBand EX-QSFP-40GE-DAC-0.5M-BL cable cost, and is it available for purchase?

The price is 78.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 118 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 10.08.2026 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/4467056/59873762_large.webp