This LSI MegaRaid SAS Controller Card, model L3-25121-61A, comes with a battery and is designed to provide reliable and high-performance connectivity between a server and hard disk drives. It uses SAS technology and has a 6GB/S data transfer rate, ensuring fast and efficient data processing. The card is compatible with PCI-E 2.0x8 port and is ideal for enterprise networking and server applications. The brand LSI is known for its quality products, and this controller card is no exception.