# Optical QSFP Transceiver BlueOptics BO25K13640DIN 40GBASE-ER4 40 km

**URL:** https://aio.lv/en/product--blueoptics-bo25k13640din--11511414
**Data updated:** 2026-02-25 16:41 (EET)
**Category:** Network Media Converters
**Manufacturer:** BlueOptics
**Manufacturer code:** BO25K13640DIN
**EAN:** 4063232340388
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 1 312.99 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 1 085.12 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-bo25k13640din--11511414

## 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

BlueOptics QSFP transceiver BO25K13640DIN is a 40GBASE-ER4 optical module designed for 40 Gbps links over single-mode fiber up to 40 km. It fits QSFP ports and supports long-reach Ethernet connections for data centers and carrier networks. Use it to extend 40G connectivity between racks or sites where reliable, high-speed optical transmission is required.

## Long description

BlueOptics BO25K13640DIN is a QSFP optical transceiver module compliant with 40GBASE-ER4 standards, designed to deliver 40 Gbps links over single-mode fiber for distances up to 40 km. The module fits QSFP ports and provides long-reach Ethernet connectivity suitable for data center interconnects, campus backbones and carrier optical networks. It supports high-bandwidth transmission while maintaining compatibility with standard QSFP interfaces and 40G Ethernet equipment.
Advantages
The transceiver provides a compact QSFP form factor with long-reach single-mode performance, enabling 40 Gbps transmission over extended distances. It offers interoperability with standard 40GBASE-ER4 systems and simplified integration into existing fiber infrastructure. Passive cooling and standard electrical/optical interfaces reduce installation complexity and support stable operation in typical telecom and data center environments.
Suitable for
 Long-reach 40G links between data center racks or buildings
 Carrier and metro network aggregation where 40 km single-mode reach is required
 Campus backbone connections and high-capacity uplinks
 Replacement or upgrade of QSFP 40G optical modules in compatible switches and routers
Key specifications
 Standard: 40GBASE-ER4 optical Ethernet
 Form factor: QSFP (Quad Small Form-factor Pluggable)
 Data rate: 40 Gbps aggregate
 Fiber type: Single-mode fiber (SMF)
 Maximum reach: up to 40 km on single-mode fiber
 Optical interface: 4-lane wavelength-division multiplexing compatible
 Operating environment: designed for use in telecom and data center equipment
How to use
Install the BO25K13640DIN into a compatible QSFP port on the network switch or router with the device powered down or following the host equipment hot-swap guidelines. Connect single-mode fiber patch cables to the module’s optical interface using appropriate LC connectors or the host adapter specified for QSFP-ER4 optics. Verify link status in the host equipment management interface and confirm correct optical power and diagnostics if available. Follow standard ESD precautions when handling the transceiver and keep protective caps on fiber connectors until the final connection is made.
Usage recommendations
Use single-mode fiber with certified attenuation characteristics and maintain proper connector cleanliness to achieve the specified 40 km reach. Ensure the host equipment supports 40GBASE-ER4 QSFP modules and check optical lane mapping and firmware compatibility when replacing or upgrading modules.

## FAQ

### How much does the BlueOptics QSFP BO25K13640DIN 40GBASE-ER4 40 km cost, and is it available for purchase?

The price is 1,312.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 20 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, Leasing for legal entities. 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

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