The Cisco SFP-10G-SR-S 10GB SR SFP+ LC Transceiver is a high-quality networking module designed for use with Cisco equipment. This transceiver features a maximum data rate of 10 Gbps and is suitable for short-range networking applications. With a 3-year warranty, you can trust in the reliability and longevity of this product. Easy to install and compatible with Cisco networking devices, this transceiver is a valuable addition to any enterprise networking setup. Taken out of a working environment. The price is for all 4. Grab yourself a bargain
eBay