# SFP28 25Gb SR Optical Transceiver, HP Enterprise 845398-B21-RFB, 100 m reach

**URL:** https://aio.lv/en/product--hp-enterprise-845398-b21-rfb--5288555
**Data updated:** 2026-01-12 19:31 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** HP Enterprise
**Manufacturer code:** 845398-B21-RFB
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 224.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 185.94 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hp-enterprise-845398-b21-rfb--5288555

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Short-range SFP28 optical transceiver from HP Enterprise (model 845398-B21-RFB) supporting 25 Gb/s data rate with SR multimode operation and nominal reach up to 100 meters. Designed for high-density server and switch connections in data centers and campus networks, it provides low-latency, hot-pluggable connectivity for 25G Ethernet links and compatible ports.

## Long description

SFP28 25Gb SR Optical Transceiver, HP Enterprise 845398-B21-RFB, 100 m reach is a short-range multimode fiber transceiver module designed by HP Enterprise to provide hot-pluggable 25 Gigabit Ethernet connectivity. The module supports SR (short reach) 25Gb/s operation over multimode fiber with a nominal maximum reach of up to 100 meters, enabling low-latency links between servers, switches and other data-center or campus network equipment with compatible SFP28 ports.
Advantages
The HP Enterprise 845398-B21-RFB SFP28 transceiver offers compact SFP28 form factor compatibility for high-density racks and switch ports while supporting 25 Gb/s data rates for improved throughput compared with 10G links. Its short-range SR design is intended for multimode fiber deployments up to 100 m, providing predictable link behavior and low latency for east-west traffic inside racks and across adjacent equipment. The module is hot-pluggable for on-the-fly insertion or replacement without powering down compatible systems.
Suitable for
 Connecting 25G-capable servers to top-of-rack switches over multimode fiber
 High-density aggregation in data center racks and pod architectures
 Short-distance links in campus networks and equipment rooms (up to 100 m)
 Upgrading from 10G to 25G links where multimode fiber is deployed
Key specifications
 Brand: HP Enterprise
 Model / MPN: 845398-B21-RFB
 Form factor: SFP28
 Data rate: 25 Gb/s (SR)
 Fiber type: Multimode fiber (MMF)
 Nominal reach: up to 100 meters
 Hot-pluggable: Yes
How to use
Install the SFP28 transceiver into any compatible SFP28 port on supported HP Enterprise or compatible network equipment following the equipment manufacturer’s instructions. Ensure the multimode fiber patch cable and connectors match the transceiver’s interface, observe correct polarity for transmit/receive pairs, and secure fiber connections to avoid strain. After insertion, verify link status through the switch or server management interface and confirm the port is configured for 25 Gb/s operation if manual configuration is required.
Usage recommendations
Use multimode fiber rated for the required distances and maintain clean connectors to prevent signal degradation. For rack or data center deployments, document port mappings and verify compatibility with the host equipment firmware; keep spare transceivers for rapid replacement to minimize downtime.

## FAQ

### How much does the HP Enterprise SFP28 25Gb SR transceiver 845398-B21-RFB cost, and is it available for purchase?

The price is 224.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 31 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 13.07.2026 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 HP Enterprise 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 HP Enterprise 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/5288555/51544292_large.webp