# BlueOptics SFP2121BU3MS InfiniBand fibre optic cable 3 m LC Yellow

**URL:** https://aio.lv/en/product--blueoptics-sfp2121bu3ms--10639997
**Data updated:** 2026-01-14 12:58 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** SFP2121BU3MS
**EAN:** 4063232609072
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 17.49 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 14.45 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-sfp2121bu3ms--10639997

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

The BlueOptics SFP2121BU3MS is a 3 m InfiniBand fibre optic cable featuring LC connectors. It utilizes G.657.A1 fibre type with a core diameter of 125 µm, ensuring high-speed data transmission and reliability for networking applications.

## Long description

The BlueOptics SFP2121BU3MS InfiniBand fibre optic cable 3 m LC Yellow is a single-mode optical patch cable designed for high-speed data transmission in networking environments. It uses G.657.A1 fibre type with a 125 µm core diameter and LC duplex connectors, providing low-loss connections and compatibility with InfiniBand transceivers and ports. The 3 m length and bright yellow jacket make it suitable for organized rack installations and short-distance backbone links where predictable performance and minimal attenuation are required.
Advantages
This cable offers low insertion loss and controlled bend performance thanks to the G.657.A1 fibre specification, helping to maintain signal integrity in confined cable-management paths. The LC duplex connectors ensure secure mating with standard SFP and QSFP transceivers used in InfiniBand systems. The 3 m length balances flexibility and signal quality for typical equipment-to-equipment connections within racks or between adjacent racks.
Suitable for
High-performance computing clusters and InfiniBand fabric connections
Data centre patching between switches, servers, and adapters
Rack-to-rack or equipment-to-equipment short-distance optical links
Environments requiring low bend sensitivity in cable routing
Key specifications
Fibre type: G.657.A1 single-mode
Core diameter: 125 µm
Connector type: LC duplex
Length: 3 m
Jacket colour: Yellow
Compatible with InfiniBand optical ports and transceivers
How to use
Inspect connector endfaces for cleanliness before insertion to avoid signal degradation. Align the LC duplex connectors with the appropriate InfiniBand ports and insert them until they click into place, ensuring correct polarity where required. Route the cable following standard cable-management practices, avoiding sharp bends and excessive tension. If relocation or reconfiguration is needed, gently disengage the connectors using the release latch and reinsert into the new ports as required.
Usage recommendations
Maintain bend radii according to the G.657.A1 specification, avoid kinks, and keep connectors capped until installation to protect endfaces. For best performance, clean endfaces with appropriate fibre cleaning tools if contamination is suspected and verify link status after installation.

## Specifications

| Feature | Value |
|---|---|
| Cable length | 3 m |
| Product colour | Yellow |
| Connector 1 | LC |
| Connector 2 | LC |
| Insertion loss | 0.2 dB |
| Fiber mode structure | Single-mode |
| Core diameter | 125 µm |
| Jacket material | Low smoke zero halogen (LSZH) |
| Connector 1 gender | Male |
| Connector 2 gender | Male |
| Quantity per pack | 1 pc(s) |
| Fibre optic type | G.657.A1 |
| Connector polish type | APC/UPC |

## FAQ

### How much does the BlueOptics SFP2121BU3MS InfiniBand fibre optic cable cost, and is it available for purchase?

The price is 17.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 23.07.2026 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/10639997/64418106_large.webp