# InfiniBand/fibre optic cable BlueOptics DEM-CB300QXS 3 m QSFP Male/Male

**URL:** https://aio.lv/en/product--blueoptics-dem-cb300qxs-bl--4464868
**Data updated:** 2026-02-25 16:30 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** DEM-CB300QXS-BL
**EAN:** 4063232636917
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 114.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 95.03 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-dem-cb300qxs-bl--4464868

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

The BlueOptics DEM-CB300QXS is a 3 m InfiniBand/fibre optic cable with QSFP connectors. It features male/male connectors, ensuring high-speed data transfer and reliable connectivity for data centers and networking applications.

## Long description

The BlueOptics DEM-CB300QXS 3 m QSFP Male/Male cable is a fibre optic and InfiniBand-compatible assembly designed for high-speed interconnects in data centre and enterprise networking environments. With a 3-metre length and QSFP male connectors at both ends, this cable supports short-range, low-latency links between switches, HCAs (Host Channel Adapters), and network appliances. The cable is intended for applications requiring predictable signal integrity and consistent throughput.
Advantages
This QSFP-to-QSFP cable delivers high data rates suitable for InfiniBand and fibre optic infrastructures while maintaining a compact and flexible form factor for rack and chassis installations. Its male/male QSFP connectors ensure straightforward mating with standard QSFP ports, and the fixed 3 m length reduces clutter compared with longer, unmanaged assemblies. The design focuses on stable connectivity and minimal insertion loss to support reliable performance in dense networking setups.
Suitable for
 Short-range connections between QSFP ports in switches and routers
 Server-to-switch links in data centres using InfiniBand or optical QSFP interfaces
 High-throughput cluster interconnects and storage area network (SAN) links
 Upgrades or replacements of existing QSFP direct-attached cabling
Key specifications
 Cable type: InfiniBand / fibre optic assembly
 Connector type: QSFP male to QSFP male
 Length: 3 metres
 Color: blue
 Form factor: direct-attach cable suitable for short-reach links
 Typical application: high-speed data centre interconnects and cluster links
How to use
Install the cable by aligning each QSFP male connector with the corresponding QSFP port on your devices and gently inserting until the connector seats. Verify link status through device LEDs or management interfaces to confirm successful negotiation. Avoid bending the cable sharply near the connector ends; route it along cable management paths in racks or chassis to prevent strain. For safe removal, depress any latching mechanism on the connector and pull straight out to avoid damaging ports.
Usage recommendations
Use the cable for short-reach links within the same rack or adjacent racks to maintain performance and reduce latency. Keep the cable in environments within manufacturer-recommended temperature and humidity ranges, and avoid exposing it to mechanical stress. When replacing or upgrading QSFP links, confirm compatibility with your devices' QSFP interface specifications and link speed settings.

## Specifications

| Feature | Value |
|---|---|
| Cable length | 3 m |
| Data transfer rate | 40 Gbit/s |
| Product colour | Black |
| Connector 1 | QSFP |
| Connector 2 | QSFP |
| InfiniBand protocol | Yes |

## FAQ

### How much does the InfiniBand/fibre optic cable BlueOptics DEM-CB300QXS cost, and is it available for purchase?

The price is 114.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 152 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 27.07.2026 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/4464868/64289461_large.webp