The product is a lot of 2 ProLabs SX-SFP-1G-C 1000Base-SX 850NM MMF Transceivers. These transceivers are designed for use in enterprise networking setups and feature SFP network ports for easy connection to switches and hubs. With a trusted brand like ProLabs, you can be sure of high-quality performance and reliability for your networking needs. Perfect for expanding network capabilities or increasing redundancy in your infrastructure.