# Fiber optic transceiver module BlueOptics QMM850-PLUS-CSR4-BO 40000 Mbit/s QSFP 850 nm

**URL:** https://aio.lv/en/product--blueoptics-qmm850-plus-csr4-bo--6185039
**Data updated:** 2026-03-07 15:15 (EET)
**Category:** Network Media Converters
**Manufacturer:** BlueOptics
**Manufacturer code:** QMM850-PLUS-CSR4-BO
**EAN:** 4063232245157
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 119.49 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 98.75 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qmm850-plus-csr4-bo--6185039

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.07.2026 | free |
| Pickup points | 03.08.2026 | 1.89 EUR |
| Courier delivery to door | 03.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics QMM850-PLUS-CSR4-BO is a QSFP fiber optic transceiver module designed for high-speed data transfer at 40000 Mbit/s. It operates at a wavelength of 850 nm and has a form factor of QSFP. With a mean time between failures (MTBF) of 3000000 hours, it ensures reliability and longevity. Weighing only 40 g, it is lightweight and easy to install.

## Long description

The BlueOptics QMM850-PLUS-CSR4-BO is a QSFP fiber optic transceiver module engineered for 40 Gbit/s optical links over multimode fiber. Operating at an 850 nm wavelength and fitted with an MPO/MTP connector, this compact module supports data transmission up to 300 m and is intended for use in standard QSFP slots on switches, routers, storage arrays and test equipment. The module includes real-time digital diagnostics (DDM/DOM) for monitoring voltage, laser current, optical power and temperature, and is specified with a long MTBF for sustained operation.
Advantages
The transceiver provides 40 Gbit/s aggregate throughput in a QSFP form factor with MPO/MTP connectivity, enabling high-density fiber deployments and simplified multi-fiber connections. Built to MSA-compatible mechanical and optical specifications, it is functionally compatible with common hardware platforms and test systems. Integrated digital diagnostic monitoring facilitates remote troubleshooting and maintenance. The module’s lightweight silver housing and robust component selection aim to ensure long operational life and stable optical performance.
Suitable for
High-speed uplinks and server interconnects in data centers
Switch-to-switch aggregation and spine-leaf fabrics
Storage area network (SAN) and backup links
Network testing and measurement devices compatible with QSFP MPO/MTP
Short-reach multimode fiber links up to 300 m
Key specifications
Form factor: QSFP
Data rate: 40000 Mbit/s (40 Gbit/s)
Wavelength: 850 nm
Connector type: MPO/MTP
Maximum transfer distance (multimode): up to 300 m
Digital diagnostics: DDM/DOM (real-time monitoring of voltage, laser current, optical power, temperature)
Typical weight: 0.04 kg
Housing colour: silver
Designed for interoperability with MSA-compliant QSFP interfaces
How to use
Install the module into a compatible QSFP port following the host device manufacturer’s hot-plug and electrostatic discharge (ESD) precautions. Use MPO/MTP patch cables or harnesses matched to the module and the corresponding MPO/MTP port on the other end. Ensure both ends of the link use the appropriate multimode fiber type and that cable polarity is correct for your network design. If supported by the host, enable and read the digital diagnostics counters to verify supply voltage, laser bias current, transmit/receive power and module temperature during commissioning and troubleshooting.
Usage recommendations
For optimal performance, pair the transceiver with quality MPO/MTP multimode patch cords and maintain clean connector endfaces. Verify that the host hardware supports QSFP 40GBASE-ESR4 or equivalent multimode protocols and DDM/DOM functions. Observe manufacturer guidance on operating temperature and ESD protection; periodic validation of optical power and link integrity helps maintain long-term availability.

## Specifications

| Feature | Value |
|---|---|
| Interface type | QSFP |
| Maximum operating temperature | 70 °C |
| Number of products included | 1 pc(s) |
| Brand compatibility | IXIA |
| SFP transceiver type | Fiber optic |
| Single-mode fiber (SMF) supported | Yes |
| SFP transceiver standard | ESR4 |

### Network

| Feature | Value |
|---|---|
| Maximum data transfer rate | 40000 Mbit/s |
| Fiber ethernet cabling technology | 40GBASE |

### Ports & interfaces

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

### Technical details

| Feature | Value |
|---|---|
| Warranty period | 5 year(s) |

### Performance

| Feature | Value |
|---|---|
| Maximum transfer distance | 300 m |
| Mean time between failures (MTBF) | 3000000 h |
| Wavelength | 850 nm |
| Rx wavelength (max) | 850 nm |
| Rx wavelength (min) | 850 nm |
| Tx wavelength (min) | 850 nm |
| Tx wavelength (max) | 850 nm |

### Weight & dimensions

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

### Other features

| Feature | Value |
|---|---|
| Form factor | QSFP |

### Operational conditions

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

### Sustainability

| Feature | Value |
|---|---|
| Sustainability compliance | Yes |
| Sustainability certificates | CE, Federal Communications Commission (FCC), RoHS |

### Features

| Feature | Value |
|---|---|
| Product colour | Silver |
| Digital Diagnostics Monitoring (DDM) | Yes |

### Packaging data

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

## FAQ

### How much does the Fiber optic transceiver BlueOptics QMM850-PLUS-CSR4-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 29.07.2026 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

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

When making a choice, we recommend paying attention to the key features: maximum data transfer rate, maximum transfer distance, weight, fiber optic connector, product colour, 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/6185039/61180161_large.webp