# InfiniBand/fibre optic cable QSFP BlueOptics X2121A-5M-N-BL 5m Male/Male

**URL:** https://aio.lv/en/product--blueoptics-x2121a-5m-n-bl--4471815
**Data updated:** 2026-02-25 16:36 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** X2121A-5M-N-BL
**EAN:** 4063232637334
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 173.49 €
**Prices and availability valid until:** 2026-08-09 23:59
**Price without VAT (21%):** 143.38 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-x2121a-5m-n-bl--4471815

## 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

The BlueOptics X2121A-5M-N-BL is a 5m InfiniBand/fibre optic cable featuring QSFP connectors. It is designed for high-speed data transmission in data centers and networking applications. With male/male connectors, it ensures compatibility with various devices, providing reliable performance and durability.

## Long description

The BlueOptics X2121A-5M-N-BL is a 5 m InfiniBand/fibre optic direct attach cable with QSFP male-to-male connectors. Designed for short-range, high-speed links in rack and adjacent-rack environments, this passive 40GBase-CR4 twinax copper assembly supports 40 Gbit/s data rates and MSA-compliant QSFP connectivity. The cable is intended for use with switches, routers, storage systems and other networking hardware that support QSFP 40G direct attach connections and provides a tested, mechanical and electrical match to standard QSFP interfaces.
Advantages
The cable offers a compact, low-latency physical link for high-bandwidth interconnects, with passive twinax construction that keeps power consumption and failure points low. MSA-compliant QSFP terminations and high-quality components provide consistent interoperability with major hardware platforms. At 5 metres, the cable provides a practical reach for within-rack and adjacent-rack installations while maintaining 40G performance.
Suitable for
Server-to-switch and switch-to-switch connections inside racks
Storage system links and SAN aggregation points
High-throughput InfiniBand and Ethernet interfaces up to 40 Gbit/s
Short-distance data center interconnects where passive DAC is supported
Key specifications
Length: 5 metres
Connector type: QSFP male to QSFP male
Physical medium: Passive twinax (copper) suitable for 40GBase-CR4
Data rate support: Up to 40 Gbit/s
Wire gauge: 30 AWG
MSA compliance: QSFP DAC electrical and mechanical specifications
Typical applications: Ethernet, FCoE, Fibre Channel and InfiniBand on short links
How to use
Install the QSFP connectors into QSFP ports on compatible devices, ensuring the port and device firmware support passive 40G DAC cables. Route the cable with gentle bends that respect the manufacturer’s minimum bend radius to avoid signal degradation. No external power or transceivers are required for passive operation; the connected devices must provide the required signalling and protocol support. Validate the link status via device indicators or management interfaces after insertion.
Usage recommendations
For reliable operation, use this cable only for short-range links within racks or between adjacent racks and confirm device compatibility with passive QSFP DACs. Avoid sharp bends and exposure to mechanical strain. If hot-plugging, follow vendor guidelines for port handling and monitoring link status in the device OS to verify full 40G operation.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.44 kg |
| Package weight | 450 g |
| Cable length | 5 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 QSFP BlueOptics X2121A-5M-N-BL cost, and is it available for purchase?

The price is 173.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 47 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/4471815/64303455_large.webp