# DAC cable CBO QSFP-40G-CU05M 5m passive copper for QSFP+ 40Gbps connections

**URL:** https://aio.lv/en/product--blueoptics-qsfp-40g-cu05m-bl--4466303
**Data updated:** 2026-02-25 16:31 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP-40G-CU05M-BL
**EAN:** 4063232144672
**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-qsfp-40g-cu05m-bl--4466303

## 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

CBO DAC cable QSFP-40G-CU05M is a 5-meter passive copper direct attach cable designed for QSFP+ ports supporting 40Gbps links. It provides a cost-effective short-reach connection between switches, routers or servers without transceivers, ensuring low latency and reliable throughput. Suitable for data center rack-to-rack or top-of-rack connections.

## Long description

BlueOptics DAC cable CBO QSFP-40G-CU05M is a 5 m passive copper direct attach cable engineered for QSFP+ ports to establish 40 Gbps links. The cable connects QSFP+ ports directly without separate transceivers, offering a compact and economical solution for short-reach interconnects in data centre environments. Intended for rack-to-rack and top-of-rack connections, this passive copper assembly provides stable throughput and low latency for high-density switching and server interconnects.
Advantages
This passive DAC cable reduces both power consumption and cost by eliminating the need for active optical transceivers. Its integrated QSFP+ connectors ensure easy hot-pluggable installation and robust mechanical mating. The 5 metre length is optimised for short-reach links inside racks or between adjacent racks while maintaining the full 40 Gbps bandwidth and reliable electrical signal transmission.
Suitable for
 Rack-to-rack high-speed interconnects in data centres
 Top-of-rack (ToR) switch to server connections
 Server-to-switch links requiring low latency and high throughput
 High-density switch clusters with QSFP+ ports
Key specifications
 Connector type: QSFP+ to QSFP+
 Transmission medium: Passive copper direct attach
 Data rate: 40 Gbps
 Length: 5 metres
 Compatibility: Designed for devices with QSFP+ ports supporting 40 Gbps links
 Latency: Low electrical latency suitable for high-performance networking
How to use
Insert each QSFP+ connector into the corresponding QSFP+ port on network switches, routers or servers until the connector latches. Verify link status through the device management interface and ensure appropriate port configuration for 40 Gbps operation. No external power or transceiver modules are required. For removal, depress the connector latch and pull the cable straight out to avoid damaging the port.
Usage recommendations
Use this 5 m passive DAC cable for short, high-density interconnects where 40 Gbps performance is required and transceiver-free operation is preferred. Avoid tight bends near the connector and maintain appropriate airflow in racks. Ensure devices support passive DAC compatibility and QSFP+ 40 Gbps signalling before deployment.

## FAQ

### How much does the DAC cable CBO QSFP-40G-CU05M 5m 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/4466303/59879406_large.webp