Fiber optic transceiver HPE X121

Name: Fiber optic transceiver module HPE J4859C
Brand: HP Enterprise
SKU: 253608
Price: 62.99 EUR
Availability: InStock

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Fiber optic transceiver module HPE X121

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Offer for legal entity, cashless payment. Why is an item available only for a legal entity?
This is due to long delivery times and limited product warranties.

Short description

The HPE X121 is a fiber optic SFP transceiver module designed for high-speed data transfer at 1000 Mbit/s. Operating at a wavelength of 1310 nm, it ensures reliable connectivity over optical networks. With a typical power consumption of just 0.5 W and a lightweight design of 20 g, this module is efficient and easy to install. Ideal for enhancing network performance in enterprise environments.

Available for order: 7 pcs.

Warranty: 2 Years

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The device has been fully restored by the manufacturer. Perfect technical and visual condition. Full packaging.

SKU: 253608

Manufacturer: HP Enterprise

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Deliver the order:

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2b. Kengaraga str., Riga, Latvia, LV-1063

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From 4.99 € (Weight: 0.03 kg)

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Product information

Description

The Gigabit LX SFP transceiver is a small form-factor pluggable module that delivers full-duplex Gigabit Ethernet connectivity. It supports single-mode fiber links up to 10 km and multimode fiber links up to 550 m, offering a compact solution for high-speed fiber connections.

Advantages

The module combines Gigabit performance with a compact SFP form factor, enabling flexible deployment in switches, routers and media converters. It supports both single-mode and multimode fibers, providing a cost-effective option for short- and medium-distance fiber links while maintaining full-duplex transmission for reliable data throughput.

Key specifications

Form factor: SFP (Small Form-factor Pluggable)
Data rate: 1.25 Gbps (Gigabit Ethernet)
Mode support: Single-mode up to 10 km; Multimode up to 550 m
Operation: Full-duplex

How to use

Insert the SFP transceiver into a compatible SFP port on a switch, router or media converter and secure it according to the device manufacturer’s instructions. Connect the appropriate single-mode or multimode fiber cable using the matching connector type, then verify link status and configure network settings on the host device as needed.

Recommendations

Choose single-mode fiber for links approaching 10 km and multimode fiber for distances up to 550 m. Confirm compatibility of the SFP port and fiber connector types on both ends before installation, and follow standard electrostatic discharge (ESD) precautions when handling the transceiver.

Specifications

Interface type:: SFP
Maximum data transfer rate:: 1000 Mbit/s
Weight:: 0.02 kg

All features

Performance

Interface type:: SFP
Maximum data transfer rate:: 1000 Mbit/s
Auto MDI/MDI-X:: No
Duplex system:: Full
Wavelength:: 1310 nm
Fiber ports quantity:: 2
Fiber optic connector:: LC
Maximum transfer distance:: 10000 m
Fiber cable diameters supported (core/cladding):: 50/125, 62.5/125
Multi-mode fiber (MMF) supported:: Yes
SFP transceiver standard:: BX-D

Network

SFP transceiver type:: Fiber optic

Power

Power consumption (typical): Power consumption in switched-on state expressed in W.: 0.5 W

Operational conditions

Minimum operating temperature:: 0 °C

Weight & dimensions

Weight:: 0.02 kg

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Customer questions

FAQ

How much does the Fiber optic transceiver HPE X121 cost, and is it available for purchase?

The price is 62.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 7 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 01.07.2026 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

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, 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.

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