# CBO DAC cable QSFP-40G-C50CM 50 cm passive QSFP+ to QSFP+

**URL:** https://aio.lv/en/product--blueoptics-qsfp-40g-c50cm-bl--4466301
**Data updated:** 2026-02-25 16:31 (EET)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP-40G-C50CM-BL
**EAN:** 4063232009995
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 80.99 €
**Prices and availability valid until:** 2026-08-05 23:59
**Price without VAT (21%):** 66.93 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qsfp-40g-c50cm-bl--4466301

## 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 CBO QSFP-40G-C50CM is a 50 cm twinax cable with QSFP+ connectors at both ends for 40Gbps links. Designed for short-range server, switch and storage interconnects in data centers, it provides low-latency, energy-efficient connections without external transceivers. Ideal for top-of-rack and intra-rack links.

## Long description

BlueOptics CBO DAC cable QSFP-40G-C50CM is a 50 cm passive QSFP+ to QSFP+ twinax cable engineered for 40 Gbps short-range connections in data centers. The cable integrates QSFP+ connectors on both ends to deliver a direct attach copper link without the need for optical transceivers, making it suitable for low-latency server, switch and storage interconnects across top-of-rack and intra-rack deployments.
Advantages
The passive design provides energy-efficient connectivity with minimal additional components, reducing power consumption compared to transceiver-based links. Its short 50 cm length limits signal attenuation for reliable 40 Gbps performance while keeping latency low. The integrated QSFP+ connectors simplify installation and maintenance, and the twinax construction offers predictable electrical characteristics for consistent channel performance in dense rack environments.
Suitable for
 Top-of-rack switch to server 40 Gbps connections
 Intra-rack links between switches and storage arrays
 Short-range, high-throughput interconnects in data centers
 Environments prioritizing low latency and energy efficiency
Key specifications
 Connector type: QSFP+ to QSFP+
 Nominal data rate: 40 Gbps aggregate
 Cable type: Passive twinax copper
 Length: 50 cm
 Typical use: Short-range server, switch, storage interconnects
 Latency: negligible for direct-attach copper links
How to use
Insert each QSFP+ connector into the corresponding QSFP+ port on your network device until the latch engages. Ensure ports are powered down or follow hot-plug guidance from device vendors if inserting into live ports. Confirm link negotiation and 40 Gbps operation via the device management interface or LED indicators. For removal, depress the connector latch and pull straight out to avoid stressing the cable or port.
Usage recommendations
Install the cable in rack paths with minimal bends; maintain the manufacturer’s recommended bend radius to preserve signal integrity. Use this passive 50 cm DAC for short-distance links within the same rack or adjacent racks; for longer runs consider active DACs or fiber-based solutions. Verify compatibility with device port specifications and check link status after installation.

## FAQ

### How much does the CBO QSFP-40G-C50CM 50 cm passive DAC cable cost, and is it available for purchase?

The price is 80.99 € (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 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/4466301/59854130_large.webp