Brand new in the box.

I'm including a copy of the original manufacturer description below.

Technical Specifications

Fiber Type: Multi Mode

Fiber Connector: LC

Transmission Distance: 300m (0.18 miles)

Transmission rate: 10Gbit/s (able to auto adapt to 1Gbit/s)

Wavelength: 850nm, SR

UTP RJ-45 port: Supports 1000Base-T, 2.5G Base-T, 5G Base-T, 10G Base-T

Dimensions: 27mm (H) * 71mm (L) * 95 mm (W)

LED: PWR, Link ACT, SD, 10G, Link, ACT

MTBF: 100,000 hours

Power Supply: AC 110-220V to DC 5V 2A (Power Supply Unit Comes in Set)

Operating temperature: -0~55ºC/ 5%~90%

Power consumption: <5W

Elevate your network's efficiency and flexibility with our 10G SFP+ to Fiber Ethernet Media Converter, featuring a 10GSFP+ 300m SR Module. Designed for high-speed network environments, this converter is your gateway to seamless data transfer and robust connectivity. Ideal for businesses, data centers, and IT professionals seeking to enhance their network infrastructure, our media converter offers the following key benefits:

High-Speed Adaptive Connectivity: Experience unparalleled data transfer rates, suitable for high-bandwidth applications. Our media converter adapts effortlessly to both 10G and 1G Ethernet devices, ensuring seamless network integration and optimized performance.

Versatile Network Integration: Embrace the flexibility of supporting both copper and fiber interfaces. The included SFP+ Fiber Module is easily replaceable, allowing you to customize your setup for any distance or fiber type, ensuring your network remains adaptable to future needs.

Plug-and-Play Convenience: Deployment is a breeze with our plug-and-play design. No software installation required; simply connect your devices for immediate integration into your network. This user-friendly approach is a hassle-free setup, allowing you to focus on what matters most.

Durable and Reliable: Built to withstand the demands of intense network environments, our media converter is the epitome of reliability. Its robust design ensures long-term performance, making it a dependable choice for your networking needs.

Compact and Efficient: Maximize your workspace with our sleek, compact design. Engineered for optimal heat dissipation and minimal energy consumption, it delivers high efficiency without compromising on performance.

Whether upgrading an existing network or building a new one, our 10G SFP+ to Fiber Ethernet Media Converter is the perfect solution for achieving high-speed, reliable, and flexible network connectivity.

Features & details:

[High-Speed Adaptive Connectivity] - Experience seamless network integration with the 10G SFP+ Media Converter, offering lightning-fast data transfer rates for high-bandwidth applications while still being able to adapt to 1G (1000Mbit/s) RJ45 Ethernet Devices

[Versatile Network Integration] - With support for both copper and fiber interfaces, the 10Gb Ethernet Media Converter ensures compatibility with diverse network setups and best of all - The included 850nm SR Multimode SFP+ Fiber Module is Replaceable - Change the SFP+ Transceiver Module to Any Other Distance or Fiber Type Any Time.

[Plug-and-Play Convenience]- The 10Gig Media Converter is designed for easy setup, requiring no software installation, making it a user-friendly solution for immediate deployment, just plug in 2 cables - Multimode & RJ-45, and it will work

[Durable and Reliable] - Built to last, the 10GB Ethernet Media Converter features a robust design that withstands the rigors of intense network environments; for 10G speeds, choose OM3 or OM4 multimode patch cables.

[Compact and Efficient] - Maximize your workspace with the sleek, compact design of the 10G Ethernet Network Media Converter, optimized for efficient heat dissipation and energy use, you can use or neat wall mount ears or desktop antislip buttons that comes in set with every device.