# BlueOptics X2121A-3M-N-BL InfiniBand fibre optic cable QSFP 3m Male/Male

**URL:** https://aio.lv/en/product--blueoptics-x2121a-3m-n-bl--4471814
**Data updated:** 2026-02-25 16:36 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** X2121A-3M-N-BL
**EAN:** 4063232637044
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 114.99 €
**Prices and availability valid until:** 2026-08-13 23:59
**Price without VAT (21%):** 95.03 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-x2121a-3m-n-bl--4471814

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 11.08.2026 | free |
| Pickup points | 14.08.2026 | 1.89 EUR |
| Courier delivery to door | 14.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics X2121A-3M-N-BL is a 3-meter InfiniBand fibre optic cable with QSFP connectors. It features male-to-male connectors, ensuring reliable high-speed data transfer for data centers and networking applications.

## Long description

The BlueOptics X2121A-3M-N-BL InfiniBand fibre optic cable QSFP 3m Male/Male is a 3-metre high-speed connection solution designed for short-reach links in racks and adjacent rack rows. It provides QSFP-to-QSFP connectivity for 40G-class applications and is suitable for data centre interconnects and high-throughput networking equipment that support QSFP direct attach solutions. The cable is intended for reliable, low-latency data transmission and is built to comply with Multi-Source Agreement (MSA) mechanical and electrical interface requirements.
Advantages
The cable offers a compact, passive twinax/direct-attach design that enables low power consumption and low latency for short-distance links. It is manufactured using industry-standard components to ensure compatibility across major networking platforms and is tested for consistent operation. The construction aims for extended service life and high availability while providing a cost-effective alternative to active optical modules for short-reach 40G connections.
Suitable for
Server-to-switch or switch-to-switch connections within racks
Short-distance high-bandwidth links in data centres
InfiniBand, Ethernet (40GBase-CR4) and Fibre Channel applications up to 40 Gbps over 3 metres
Storage system interconnects and high-performance computing clusters
Key specifications
Connector type: QSFP to QSFP, male-to-male
Length: 3 metres
Maximum data rate supported: up to 40 Gbps (per cable, suitable for 40GBase-CR4 and InfiniBand use)
Cable type: passive direct attach / twinax copper (suitable for short-distance electrical signalling)
Gauge: 30 AWG conductors
MSA-compliant mechanical and electrical interface
Designed for low latency and low power consumption
How to use
Ensure both endpoints (switches, routers or servers) support passive QSFP direct attach or the stated 40GBase-CR4/InfiniBand interfaces. With equipment powered down or in accordance with your site’s hot-plug procedures, insert each QSFP connector into the corresponding QSFP port until it latches. Verify link status via the host or switch management interface and monitor the link for correct speed and error statistics. For best results, route the cable to avoid sharp bends and mechanical strain on connectors.
Usage recommendations
Use this 3 m passive QSFP direct attach cable for short-reach connections inside racks or between adjacent racks, and confirm compatibility with your hardware vendor’s supported passive DAC list. Avoid excessive bending radii, secure cables to prevent strain on ports, and follow ESD precautions when handling connectors.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.25 kg |
| Package weight | 260 g |
| 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 X2121A-3M-N-BL 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 11.08.2026 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/4471814/64303449_large.webp