# DAC cable CBO EX-QSFP-40GE-DAC-50CM 0.5m QSFP-to-QSFP passive direct-attach cable, black

**URL:** https://aio.lv/en/product--blueoptics-ex-qsfp-40ge-dac-50cm-bl--4467060
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** EX-QSFP-40GE-DAC-50CM-BL
**EAN:** 4063232009896
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 70.49 €
**Prices and availability valid until:** 2026-08-09 23:59
**Price without VAT (21%):** 58.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-ex-qsfp-40ge-dac-50cm-bl--4467060

## 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 EX-QSFP-40GE-DAC-50CM is a 0.5 m passive direct-attach copper (DAC) cable with QSFP connectors on both ends, designed for short-range 40GbE interconnects. It provides a simple low-latency connection between QSFP ports in switches, routers or servers for data center top-of-rack and cross-connect applications. Black color, factory-terminated, plug-and-play.

## Long description

CBO EX-QSFP-40GE-DAC-50CM is a 0.5 m passive direct-attach copper (DAC) cable with QSFP connectors on both ends, intended for short-range 40GbE interconnects. The cable offers a factory-terminated, plug-and-play connection that eliminates the need for separate transceivers, providing a low-latency link between QSFP ports in switches, routers and servers. Its compact length and robust black jacket make it suitable for dense data center top-of-rack and cross-connect installations where reliable, short-distance high-speed connectivity is required.
Advantages
The passive DAC design provides a cost-effective, energy-efficient solution for 40 Gb Ethernet connections without the need for optical modules. With QSFP-to-QSFP terminations, the cable delivers low latency and minimal signal loss for short runs. Being factory-terminated and plug-and-play reduces installation time and the risk of connector errors. The 0.5 m length is optimized for close-proximity port pairs, helping to maintain tidy cable management in high-density racks.
Suitable for
 Top-of-rack switch-to-switch connections in data centers
 Server-to-switch or server-to-server high-speed links within the same rack
 Short-distance cross-connects in racks and patch panels
 Environments requiring low-latency 40GbE interconnects
Key specifications
 Connector type: QSFP to QSFP
 Length: 0.5 m (50 cm)
 Media: Passive copper direct-attach
 Supported data rate: 40 Gigabit Ethernet
 Installation: Factory-terminated, plug-and-play
 Colour: Black
How to use
Ensure both QSFP ports support passive DAC connections and are powered off or in a safe state before insertion. Align each QSFP connector with the port and insert until the latch engages; avoid twisting or excessive force. After connection, power on the devices and verify link status through the network equipment management interface or LEDs. For removal, depress the latch and pull the connector straight out to prevent damage to the port or cable.
Usage recommendations
Use this 0.5 m DAC cable for short, direct links where 40GbE performance is required and space is limited. Maintain bend radius guidelines, avoid tight kinks, and keep the cable away from sources of mechanical stress or sharp edges. For longer distances or active signal conditioning, consider optical transceivers or active DAC alternatives.

## FAQ

### How much does the DAC cable CBO EX-QSFP-40GE-DAC-50CM QSFP-to-QSFP 0.5m cost, and is it available for purchase?

The price is 70.49 € (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/4467060/59856117_large.webp