# Fiber optic transceiver module BlueOptics 321-1646-BO 40000 Mbit/s QSFP 850 nm

**URL:** https://aio.lv/en/product--blueoptics-321-1646-bo--4472239
**Data updated:** 2026-02-25 16:36 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** 321-1646-BO
**EAN:** 4063232628547
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 93.99 €
**Prices and availability valid until:** 2026-08-11 23:59
**Price without VAT (21%):** 77.68 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-321-1646-bo--4472239

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.08.2026 | free |
| Pickup points | 13.08.2026 | 1.89 EUR |
| Courier delivery to door | 13.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics 321-1646-BO is a fiber optic transceiver module designed for high-speed data transfer with a maximum rate of 40000 Mbit/s. It operates at 850 nm and features a QSFP interface. With a mean time between failures (MTBF) of 1000000 hours, it ensures reliability. The module is compliant with RoHS standards and weighs only 20 g, making it a lightweight solution for networking needs.

## Long description

The BlueOptics 321-1646-BO is a QSFP fiber optic transceiver module for high-speed short-reach networks. It supports a maximum data transfer rate of 40,000 Mbit/s, operates at a wavelength of 850 nm and uses an MPO/MTP-style multi-fiber interface compatible with QSFP form-factor deployments. The module is lightweight (approximately 20 g), RoHS-compliant and is specified with a high mean time between failures (MTBF) to meet availability requirements in data center and enterprise environments.
Advantages
The transceiver offers multi-mode fiber support for short-range 40G links with simultaneous transmit and receive channels in the QSFP package. Designed to follow MSA standards, it is manufactured with components that enable long service life and consistent performance. Digital diagnostic monitoring capabilities provide real-time information on key parameters where supported by host hardware. The compact silver-coloured module simplifies installation in QSFP slots while minimising weight impact.
Suitable for
40G Ethernet connections between switches and aggregation equipment
High-speed links in storage and server interconnects within data centers
Short-reach multimode fiber links up to the supported distance for 850 nm optics
Environments requiring RoHS-compliant, QSFP-format transceivers
Key specifications
Interface type: QSFP (Quad Small Form-factor Pluggable)
Maximum data transfer rate: 40000 Mbit/s
Optical wavelength: 850 nm
Connector type: MPO/MTP multi-fiber (QSFP-compatible MPO for SR4 use)
Fiber type: multimode fiber (designed for short-reach multimode links)
Weight: approximately 0.02 kg
Product colour: silver
Compliance: RoHS
Reliability indicator: MTBF specified (high availability design)
How to use
Install the BlueOptics 321-1646-BO into a compatible QSFP port following the host device manufacturer's hot-plug and electrostatic discharge procedures. Connect the MPO/MTP patch cord to the module and route the multimode fiber to the corresponding MPO/MTP termination or patch panel. Confirm link negotiation and speed on the host system; if available, enable and read digital diagnostic monitoring through supported management interfaces to verify operating parameters. Remove the transceiver by following the reverse of the insertion procedure when performing maintenance or replacement.
Usage recommendations
Use short-length multimode OM3/OM4 patch cords and proper MPO/MTP polarity and keying for SR4 deployments. Verify that the target switch or other hardware explicitly supports third-party QSFP transceivers and DDM/DOM functions if diagnostic monitoring is required. Store unused modules in anti-static packaging and avoid exposure to dust or direct sunlight to maintain optical performance.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | QSFP |
| Maximum data transfer rate | 40000 Mbit/s |
| Wavelength | 850 nm |
| Fiber optic connector | MTP/MPO |
| Maximum transfer distance | 150 m |
| Rx wavelength (max) | 850 nm |
| Rx wavelength (min) | 850 nm |
| Tx wavelength (min) | 850 nm |
| Tx wavelength (max) | 850 nm |
| Multi-mode fiber (MMF) supported | Yes |

### Network

| Feature | Value |
|---|---|
| SFP transceiver type | Fiber optic |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.02 kg |

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 70 |
| Maximum operating temperature | 70 °C |
| Minimum operating temperature | 0 °C |

### Logistics data

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

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 30 g |

### Packaging content

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

### Features

| Feature | Value |
|---|---|
| Mean time between failures (MTBF) | 1000000 h |
| Product colour | Silver |

### Certificates

| Feature | Value |
|---|---|
| Compliance certificates | RoHS |

## FAQ

### How much does the Fiber optic transceiver BlueOptics 321-1646-BO cost, and is it available for purchase?

The price is 93.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 423 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 10.08.2026 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: interface type, maximum data transfer rate, weight, 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/4472239/64304283_large.webp