The 8 JDSU PLRXPL-VE-SG4-62 1000-BASE-SX 4 Gbps Multi-rate Fibre Channel Transceiver is a high-quality SFP module designed for enterprise networking and server applications. Made by JDSU, a reputable brand, these transceivers offer fast and reliable data transmission at 4 Gbps. With a total of 8 modules included in the package, this product is ideal for adding multiple high-speed connections to your network infrastructure. Manufactured in China, these transceivers are reliable and efficient for various networking needs.