# CBO DAC cable QSFP to QSFP 0.5 m BlueLAN (direct-attach passive)

**URL:** https://aio.lv/en/product--blueoptics-cab-q-q-05m-bl--4470504
**Data updated:** 2026-02-25 16:34 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** CAB-Q-Q-0.5M-BL
**EAN:** 4063232009988
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 78.99 €
**Prices and availability valid until:** 2026-08-08 23:59
**Price without VAT (21%):** 65.28 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-cab-q-q-05m-bl--4470504

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.08.2026 | free |
| Pickup points | 12.08.2026 | 1.89 EUR |
| Courier delivery to door | 12.08.2026 | 4.99 EUR |

## Summary description

Direct attach copper (DAC) cable from CBO, BlueLAN CAB-Q-Q-0.5M QSFP to QSFP, 0.5 meter length. Designed for short-range high-speed connections between QSFP ports in switches, routers and servers. Passive construction provides low-latency, reliable 40Gbps-class connectivity without extra transceivers. Ideal for data center patching and rack-to-rack links.

## Long description

CBO DAC cable QSFP to QSFP 0.5 m BlueLAN (direct-attach passive) is a 0.5 metre direct attach copper (DAC) cable designed for short-range, high-speed connections between QSFP ports in switches, routers and servers. The passive construction provides a low-latency, power-efficient physical link that supports 40Gbps-class connectivity without the need for separate optical transceivers. This cable is intended for reliable rack-to-rack and in-rack patching in data centre environments and network closets where short, fixed-length connections are required.
Advantages
The direct-attach passive design delivers predictable signal performance and minimal latency while eliminating the cost and power consumption associated with separate transceivers. At 0.5 m length the cable offers a neat, low-profile connection that reduces cable clutter in dense rack deployments. Compatibility with standard QSFP ports ensures straightforward installation and hot-pluggable convenience. The copper construction provides thermal stability and consistent electrical characteristics for short-reach links.
Suitable for (tasks / use cases)
 Short-range 40Gbps connections between QSFP-enabled switches and routers
 In-rack patching between servers and top-of-rack switches
 Rack-to-rack links in data centre rows where short fixed-length cabling is preferred
 Temporary or permanent high-density cabling in network closets
Key specifications
 Connector type: QSFP to QSFP
 Cable type: Direct-attach passive copper
 Length: 0.5 metre
 Nominal data rate: 40 Gbps class
 Designed use: Short-reach interconnects (in-rack, rack-to-rack)
 Colour: Blue
How to use
Install the cable by inserting each QSFP connector into the corresponding QSFP port until it engages; ensure both devices support passive DAC connections and are powered off or that hot-plugging is supported by your equipment. Route the cable to avoid sharp bends and mechanical strain; the short 0.5 m length simplifies tidy routing within racks. After connection, verify link status in the network equipment management interface and confirm expected throughput and error rates. For removal, depress the latch on each QSFP connector and withdraw gently.
Usage recommendations
Use this cable for short-distance, high-density deployments where 40Gbps QSFP connectivity is required and optical transceivers are not needed. Avoid using the cable in environments requiring extended reach or in situations with excessive vibration or physical stress. For best results, pair with compatible QSFP ports and monitor link performance after installation.

## FAQ

### How much does the CBO QSFP to QSFP DAC cable 0.5 m 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 07.08.2026 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/4470504/59855105_large.webp