# BlueOptics SFP3131FU20MK InfiniBand fibre optic cable 20 m LC OM4

**URL:** https://aio.lv/en/product--blueoptics-sfp3131fu20mk--5038795
**Data updated:** 2026-02-25 16:36 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** SFP3131FU20MK
**EAN:** 4063232618197
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 47.49 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 39.25 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-sfp3131fu20mk--5038795

## 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 SFP3131FU20MK is a 20 m long OM4 fibre optic cable with LC connectors on both ends. It supports full duplex communication and has a core diameter of 50 µm, making it ideal for high-speed data transmission in InfiniBand applications.

## Long description

The BlueOptics SFP3131FU20MK is a 20 m OM4 duplex fibre optic patch cord with LC/UPC connectors on both ends, designed for InfiniBand and other high-speed multimode links. The cable uses 50/125 µm laser-optimized multimode fiber (LOMMF) optimized for 850 nm transmission, housed in a flame-retardant LSZH jacket and coloured magenta for easy identification. It supports full-duplex communication and is supplied with measured insertion loss and return loss values to ensure reliable performance.
Advantages
This OM4 LC-LC duplex cable offers low attenuation (typical 2.5 dB/km), low insertion loss and high return loss for stable, high-bandwidth links. Connectors incorporate zirconia ceramic ferrules rated for up to 1500 mating cycles and are manufactured by reputable OEMs. The LSZH jacket reduces smoke and avoids halogen emission in case of fire, while production testing with interferometer and OTDR provides documented quality control and a measurement protocol with each unit.
Suitable for
InfiniBand interconnects and high-speed multimode links
Patch panel to transceiver or transceiver-to-transceiver connections
Data centre horizontal and rack-to-rack links requiring OM4 performance
Short-reach multimode applications at 850 nm
Key specifications
Fiber type: OM4 laser-optimized multimode fiber (50/125 µm)
Length: 20 m
Connector type: Duplex LC/UPC to LC/UPC
Polarization: Full duplex (duplex patch cord)
Typical attenuation: 2.5 dB/km at 850 nm
Jacket: LSZH (low smoke zero halogen), magenta colour
Operational wavelength: 850 nm
Connector durability: up to 1500 mating cycles (zirconia ferrule)
How to use
Uncoil the BlueOptics LC-LC OM4 duplex cable gently to avoid kinks and lay it along the intended routing path. Align and insert each LC connector into the corresponding LC port on patch panels or optical transceivers until a positive click is felt. Ensure transmit (TX) and receive (RX) orientation is correct for full-duplex operation. Avoid tight bends below the specified minimum bend radius and secure the cable using appropriate cable management to prevent mechanical stress. Retain the supplied measurement protocol for reference and verification during installation or troubleshooting.
Usage recommendations
Store and handle the cable in a clean environment to keep connector endfaces free of dust and contamination. Use a fibre inspection tool or cleaning cassette before mating connectors. Maintain bend radius guidelines and avoid repeated tight bending to preserve low insertion loss. For critical links, refer to the supplied OTDR/interferometer measurements and perform post-installation testing to verify link performance.

## Specifications

| Feature | Value |
|---|---|
| Certification | IEC-61034,IEC-754-1, IEC 60332-1, IEC 60332-3, IEC/EN 60950 |
| Full duplex | Yes |
| Cable length | 20 m |
| Product colour | Red |
| Connector material | Ceramic |
| Connector 1 | LC |
| Connector 2 | LC |
| Cable diameter | 2 mm |
| Fiber mode structure | Multi-mode |
| Core diameter | 50 µm |
| Cladding diameter | 125 µm |
| Jacket material | Low smoke zero halogen (LSZH) |
| Connector 1 gender | Male |
| Connector 2 gender | Male |
| Quantity per pack | 1 pc(s) |
| Wavelengths supported | 850 |
| Fibre optic type | OM4 |
| Doesn't contain | Halogen |
| Connector polish type | UPC |

## FAQ

### How much does the BlueOptics SFP3131FU20MK InfiniBand fibre optic cable cost, and is it available for purchase?

The price is 47.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 276 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/5038795/64338264_large.webp