# Network adapter kit HP Enterprise Adaptor Kit 655874-B21-RFB QSFP to SFP+

**URL:** https://aio.lv/en/product--hp-enterprise-655874-b21-rfb--10627502
**Data updated:** 2026-01-12 19:31 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** HP Enterprise
**Manufacturer code:** 655874-B21-RFB
**EAN:** 5712505720943
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 36.49 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 30.16 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hp-enterprise-655874-b21-rfb--10627502

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

HP Enterprise Adaptor Kit 655874-B21-RFB provides an interface conversion from QSFP to SFP+ for compatible network equipment. The kit enables use of SFP+ modules or cables where QSFP ports are present, supporting standard QSFP and SFP+ form factors. It is intended for data center and enterprise networking to simplify port compatibility and extend existing cabling investments.

## Long description

HP Enterprise Adaptor Kit 655874-B21-RFB QSFP to SFP+ provides a mechanical and electrical interface conversion that allows SFP+ modules or direct-attach cables to be used in QSFP ports on compatible HP Enterprise network equipment. The kit supports standard QSFP and SFP+ form factors and is intended to preserve existing SFP+ cabling and transceivers when upgrading or reconfiguring switches and routers in data center and enterprise networking environments.
Advantages
The adaptor kit enables port-level flexibility by converting a QSFP port to accept SFP+ modules or cables without requiring replacement of the host module. This reduces equipment downtime and lowers migration cost by reusing installed SFP+ optics and cables. The product is designed to match form-factor and electrical requirements for supported HP Enterprise devices and preserves signal integrity for high-speed links when used according to manufacturer guidelines.
Suitable for
 Reusing SFP+ transceivers and DAC/active cables on equipment with QSFP ports
 Data center port migration and incremental capacity upgrades
 Mixed-speed environments where 10Gb SFP+ connectivity is needed alongside QSFP-based infrastructure
 Testing and lab setups that require QSFP-to-SFP+ interoperability
Key specifications
 Brand: HP Enterprise
 Manufacturer part number (MPN): 655874-B21-RFB
 EAN: 5712505720943
 Form factor conversion: QSFP to SFP+
 Intended use: interface conversion to accept SFP+ modules/cables in QSFP ports
 Typical application: enterprise and data center network equipment compatibility
How to use
Install the adaptor into a compatible QSFP port on the host device following the device manufacturer’s mechanical insertion procedure. Once the adaptor is seated, insert a compatible SFP+ transceiver or SFP+ direct-attach cable into the adaptor until it latches. Verify link status and speed through the switch or router management interface and confirm that the connected SFP+ module is supported by the host platform. Follow any firmware or configuration guidelines from HP Enterprise for port mode, speed negotiation, and optical parameters.
Usage recommendations
Use HP Enterprise-approved SFP+ modules and cables for best compatibility. Check the host device release notes and supported optics list before deployment. Avoid forcing mechanical insertion and ensure static discharge precautions during installation. For mission-critical links, validate performance at expected traffic loads and monitor link health via device management tools.

## FAQ

### How much does the HP Enterprise Adaptor Kit 655874-B21-RFB QSFP to SFP+ cost, and is it available for purchase?

The price is 36.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 15.07.2026 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

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