# BlueOptics SFP2121BU20MK InfiniBand fibre optic cable 20 m LC Yellow

**URL:** https://aio.lv/en/product--blueoptics-sfp2121bu20mk--4469499
**Data updated:** 2026-02-25 16:34 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** SFP2121BU20MK
**EAN:** 4063232620008
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 29.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 24.37 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-sfp2121bu20mk--4469499

## 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 SFP2121BU20MK is a 20 m InfiniBand fibre optic cable featuring LC connectors. It uses OS2 fibre type with a core diameter of 125 µm, ideal for high-speed data transmission in data centers and networking applications.

## Long description

The BlueOptics SFP2121BU20MK InfiniBand fibre optic cable 20 m LC Yellow is a single-mode OS2 patch cable designed for high-speed data transmission in networking and data centre environments. With LC connectors and a 20 metre length, this yellow cable provides a cost-effective and reliable link between InfiniBand devices, switches, transceivers and patch panels. The cable construction uses a 125 µm core diameter fibre suitable for long-distance, low-loss signal propagation typical of single-mode installations.
Advantages
This InfiniBand fibre optic cable combines single-mode OS2 performance with LC connector compatibility to support low attenuation and high bandwidth over its 20 m length. The yellow jacket provides industry-standard colour coding for single-mode runs, making identification and cabling management easier. The LC connector endfaces are designed to ensure stable mating with transceivers and adaptors, reducing insertion loss and return loss in typical data centre layouts.
Suitable for
Connecting InfiniBand host channel adapters to switches and switches to switches in HPC clusters
Patch connections in data centre racks and network cabinets
Linking transceivers and optical modules that use LC interfaces
Single-mode backbone and long-reach point-to-point connections up to moderate distances
Key specifications
Fibre type: Single-mode OS2
Length: 20 metres
Connector type: LC to LC
Fibre core diameter: 125 µm
Jacket colour: Yellow (single-mode identification)
How to use
Route the cable between equipment while avoiding sharp bends and tight cable ties; maintain the manufacturer’s recommended minimum bend radius. Clean connector endfaces before insertion using appropriate fibre cleaning tools to minimise insertion loss. Insert LC connectors into compatible ports or adaptors until they click into place, and label both ends if required for easier identification in patch panels. When removing the cable, depress the release tab on the LC connector and gently withdraw to avoid damaging the ferrule.
Usage recommendations
For optimal performance in data centres and HPC environments, use this OS2 single-mode cable with compatible InfiniBand transceivers and maintain a dust-free environment for connector endfaces. Avoid tight bundling with power cables and follow standard fibre handling practices to preserve signal integrity.

## Specifications

| Feature | Value |
|---|---|
| Cable length | 20 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 | OS2 |
| Connector polish type | UPC |

## FAQ

### How much does the InfiniBand fibre optic cable BlueOptics SFP2121BU20MK cost, and is it available for purchase?

The price is 29.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 9 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/4469499/64297861_large.webp