# BlueOptics X66211A-0.5-BL InfiniBand/fibre optic cable 0.5 m QSFP28 Male/Male

**URL:** https://aio.lv/en/product--blueoptics-x66211a-05-bl--4471844
**Data updated:** 2026-02-25 16:36 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** X66211A-0.5-BL
**EAN:** 4063232145082
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 105.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 87.18 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-x66211a-05-bl--4471844

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.07.2026 | free |
| Pickup points | 27.07.2026 | 1.99 EUR |
| Courier delivery to door | 27.07.2026 | 4.99 EUR |

## Summary description

The BlueOptics X66211A-0.5-BL is a 0.5 m InfiniBand/fibre optic cable featuring QSFP28 connectors. It provides high-speed data transmission and is ideal for connecting devices in data centers and high-performance computing environments.

## Long description

The BlueOptics X66211A-0.5-BL InfiniBand/fibre optic cable is a 0.5 m QSFP28 to QSFP28 connection designed for short-range, high-bandwidth links in racks and adjacent rack rows. It supports 100G data transmission rates and is intended for use in data centers, high-performance computing clusters and other environments that require reliable, low-latency interconnects. The cable follows standard QSFP28 electrical and mechanical specifications to ensure compatibility with hardware platforms that accept QSFP28 direct attach connections.
Advantages
This 0.5 m QSFP28 Male/Male cable provides a compact, low-latency connection with minimal power overhead compared to active transceivers. Its passive twinax construction is suited for short-distance electrical signal transmission while maintaining support for 100G Ethernet, FCoE, Fibre Channel and InfiniBand protocols where the host interfaces are compatible. The cable is built to meet multi-vendor interoperability norms and industrial standards for consistent performance and long service life in high-availability installations.
Suitable for
Short-reach connections between switches, routers and storage in rack and adjacent rack scenarios
High-performance computing clusters requiring InfiniBand or 100G interconnects
Data center top-of-rack and end-of-row links that accept QSFP28 passive direct attach cables
Key specifications
Connector type: QSFP28 male to QSFP28 male
Length: 0.5 meter
Supported data rates: up to 100 Gbit/s
Cable type: passive twinax copper (30 AWG conductors)
Protocol support: Ethernet (100GBase-CR4), FCoE, Fibre Channel, InfiniBand (where supported by host hardware)
Compliance: MSA-compliant QSFP DAC electrical/mechanical specification; manufactured to meet CE and RoHS-related industry requirements
How to use
Install the cable by aligning each QSFP28 plug with the corresponding QSFP28 port on the devices to be connected and inserting until the latch engages. Use the cable for short-distance links within the same rack or between adjacent racks, ensuring both connected devices officially support passive QSFP28 direct attach cables and the target protocol (for example 100GBase-CR4). Avoid routing that subjects the cable to excessive bending or mechanical stress; maintain the minimum bend radius recommended by the equipment vendor. For troubleshooting, verify link status LEDs on connected devices and consult host hardware compatibility lists if the link does not come up.
Usage recommendations
For reliable operation, verify that your switches, routers or storage systems explicitly support passive QSFP28 DACs for 100GBase-CR4 or InfiniBand. Use 0.5 m passive twinax connections for short, low-latency runs inside racks; for longer distances consider active DAC or optical transceivers and fiber. Store and route the cable to avoid sharp bends and mechanical strain, and test sample cables in your environment if vendor compatibility is critical.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.15 kg |
| Package weight | 160 g |
| Cable length | 0.5 m |
| Data transfer rate | 100 Gbit/s |
| Product colour | Black |
| Connector 1 | QSFP28 |
| Connector 2 | QSFP28 |
| InfiniBand protocol | Yes |

## FAQ

### How much does the InfiniBand/fibre optic cable BlueOptics X66211A-0.5-BL cost, and is it available for purchase?

The price is 105.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 232 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 22.07.2026 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/4471844/64303628_large.webp