# QSFP Transceiver Module BlueOptics QSFP-40G-ESR4-AT-BO 40 Mbit/s 850 nm

**URL:** https://aio.lv/en/product--blueoptics-qsfp-40g-esr4-at-bo--6185033
**Data updated:** 2026-03-07 15:15 (EET)
**Category:** Network Media Converters
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP-40G-ESR4-AT-BO
**EAN:** 4063232074931
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 119.49 €
**Prices and availability valid until:** 2026-08-27 23:59
**Price without VAT (21%):** 98.75 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qsfp-40g-esr4-at-bo--6185033

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 26.08.2026 | free |
| Pickup points | 31.08.2026 | 1.79 EUR |
| Courier delivery to door | 31.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics QSFP-40G-ESR4-AT-BO is a fiber optic transceiver module designed for high-speed data transfer at 40 Mbit/s. It operates at a wavelength of 850 nm and has a mean time between failures (MTBF) of 1,000,000 hours, ensuring reliability. Weighing 40 g, it is compact and suitable for various networking applications.

## Long description

The BlueOptics QSFP-40G-ESR4-AT-BO is a compact QSFP optical transceiver module designed for 40 Mbit/s multimode fiber links. It transmits and receives at an 850 nm wavelength, uses an MPO/MTP connector for parallel fiber interfaces and supports multimode distances up to 300 m. With a lightweight housing of approximately 40 g and a rated MTBF of 1,000,000 hours, the module is intended for deployment in high-density network equipment that accepts QSFP form-factor optics.
Advantages
The module follows MSA QSFP mechanical and electrical specifications to ensure interoperability with compatible hardware platforms. It provides bidirectional 850 nm optical transmission over multimode fiber using an MPO/MTP connector, enabling parallel 40 Gigabit Ethernet links. The transceiver includes support for digital diagnostic monitoring (DDM/DOM) when the host hardware supports that interface, and is built with components selected for long operational lifetime and compliance with common industrial standards such as CE and RoHS.
Suitable for
40 Gigabit Ethernet multimode fiber links up to 300 m
High-density switch and router QSFP ports
Data center aggregation and server uplinks
Storage systems and SAN interconnects that accept QSFP optics
Key specifications
Maximum data transfer rate: 40 Mbit/s
Wavelength (Tx/Rx): 850 nm
Maximum transfer distance on multimode fiber: 300 m
Fiber connector type: MTP/MPO
Interface type: 40 Gigabit Ethernet (QSFP form factor)
Weight: 0.04 kg
Mean time between failures (MTBF): 1,000,000 hours
How to use
Install the transceiver into a compatible QSFP port on your switch, router or storage appliance following the host vendor’s hot-swap and anti-static procedures. Connect an MPO/MTP multimode fiber patch cable between this transceiver and the corresponding MPO/MTP connector on the remote transceiver or patch panel. Verify link status and speed through the host device management interface. If DDM/DOM features are required, confirm that the host hardware supports and exposes digital diagnostics to monitor voltage, temperature, transmit/receive power and laser bias current.
Usage recommendations
Use high-quality multimode MPO/MTP patch cords and ensure fiber end-face cleanliness to achieve the specified range and optical performance. Match cable type (OM3/OM4) and patching infrastructure to your required distance and loss budget. When replacing or upgrading optics, consult the host vendor’s compatibility documentation and, if available, request a sample to validate interoperability in your environment.

## Specifications

| Feature | Value |
|---|---|
| Interface type | QSFP |
| Ethernet LAN | Yes |
| Number of products included | 1 pc(s) |
| SFP transceiver type | Fiber optic |
| Multi-mode fiber (MMF) supported | Yes |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 50 g |

### Packaging content

| Feature | Value |
|---|---|
| Manual | Yes |

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 70 |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.04 kg |

### Ports & interfaces

| Feature | Value |
|---|---|
| Fiber optic connector | MTP/MPO |

### Performance

| Feature | Value |
|---|---|
| Mean time between failures (MTBF) | 1000000 h |
| Rx wavelength (max) | 850 nm |
| Tx wavelength (max) | 850 nm |
| Wavelength | 850 nm |
| Maximum transfer distance | 300 m |

### Network

| Feature | Value |
|---|---|
| Ethernet interface type | 40 Gigabit Ethernet |
| Maximum data transfer rate | 40 Mbit/s |

## FAQ

### How much does the QSFP Transceiver BlueOptics QSFP-40G-ESR4-AT-BO cost, and is it available for purchase?

The price is 119.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 86 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 26.08.2026 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: wavelength, maximum transfer distance, maximum data transfer rate, fiber optic connector, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/6185033/54616534_large.webp