# BlueOptics SFP3131BU4MK InfiniBand fibre optic cable 4 m LC Yellow

**URL:** https://aio.lv/en/product--blueoptics-sfp3131bu4mk--6660728
**Data updated:** 2026-03-07 15:16 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** SFP3131BU4MK
**EAN:** 4063232238272
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 27.99 €
**Prices and availability valid until:** 2026-08-03 23:59
**Price without VAT (21%):** 23.13 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-sfp3131bu4mk--6660728

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.08.2026 | free |
| Pickup points | 06.08.2026 | 1.89 EUR |
| Courier delivery to door | 06.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics SFP3131BU4MK is a 4 m InfiniBand fibre optic cable featuring LC connectors. It utilizes G.657.A1 fibre optic type, ensuring high performance and reliability for data transmission. Ideal for connecting devices in data centers or networking environments.

## Long description

The BlueOptics SFP3131BU4MK is a 4 m InfiniBand fibre optic patch cord with duplex LC/UPC to LC/UPC connectors, designed for single-mode transmission using G.657.A1 fiber. With a yellow LSZH outer jacket and laser-optimized single-mode fiber (9/125 µm), this LC–LC cable supports transmission at common wavelengths (1310 nm and 1550 nm) and is intended for short- to medium-reach interconnections in racks, patch panels and optical transceiver links in data centers and networking environments. Each unit is factory-tested for attenuation and return loss and shipped with a measurement protocol.
Advantages
This 4 m LC–LC patch cord offers low attenuation (typical 0.4 dB/km) and high return-loss performance with the option to optimize polish types (UPC or 8° APC) where applicable. The cable uses branded single-mode fiber from established manufacturers and precision zirconia ceramic ferrules for consistent optical mating and durability up to the specified mating cycle. The LSZH jacket reduces smoke and eliminates halogen release in case of fire, meeting industrial safety expectations and Telcordia GR-326-Core requirements.
Suitable for
Interconnecting InfiniBand-enabled devices and optical transceivers within racks and patch panels
Single-mode fiber backbone links and short- to medium-distance point-to-point connections
Data center and telecom equipment that require LC/UPC to LC/UPC duplex connections
Key specifications
Fiber type: Single-mode G.657.A1 (9/125 µm)
Connector type: Duplex LC/UPC to LC/UPC
Length: 4 m
Wavelengths supported: 1310 nm, 1550 nm
Typical attenuation: 0.4 dB/km
Jacket material: LSZH (flame-retardant, low smoke)
Color: Yellow
Ferrule material: Zirconia ceramic
How to use
Inspect connector endfaces and cable for visible contamination before installation and, if needed, clean using approved fiber-cleaning tools. Route the 4 m patch cord between the two LC ports avoiding sharp bends and excessive tension; maintain the manufacturer recommended minimum bend radius for single-mode fiber. Plug the LC duplex connectors into matching LC ports on patch panels or transceivers, ensuring correct polarity for duplex links. After installation, verify link integrity and loss values using appropriate test equipment; compare measurements with the supplied protocol.
Usage recommendations
Store and handle the patch cord in a dry, dust-free environment. Use dust caps when connectors are not in use, avoid kinking the cable, and follow standard ESD and fiber-safety procedures when connecting or disconnecting. For applications requiring different polish or specific attenuation targets, request custom polish options or custom lengths from the supplier.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.02 kg |
| Package weight | 20 g |
| Cable length | 4 m |
| Product colour | Yellow |
| Connector 1 | LC |
| Connector 2 | LC |
| Connector 1 gender | Male |
| Connector 2 gender | Male |
| Quantity per pack | 1 pc(s) |
| Fibre optic type | G.657.A1 |
| Connector polish type | UPC |
| Warranty period | 25 year(s) |

## FAQ

### How much does the InfiniBand fibre optic cable BlueOptics SFP3131BU4MK cost, and is it available for purchase?

The price is 27.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 128 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 03.08.2026 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/6660728/64368353_large.webp