The Dell H355 (0VCV6T) is a high-performance Host Bus Adapter (HBA) designed to offer robust connectivity for SAS and SATA storage devices in Dell PowerEdge servers. Equipped with a PCIe Gen 4 x8 interface, the H355 supports up to 12Gbps transfer speeds for SAS devices and 6Gbps for SATA devices, ensuring fast and reliable data access for a wide range of storage configurations. Unlike traditional RAID controllers, the H355 is an HBA, meaning it does not provide hardware RAID capabilities but instead passes data directly to the operating system, making it ideal for environments that rely on software-defined storage or external RAID solutions. This adapter is perfect for businesses or data centres looking for high-density, high-performance storage without the overhead of RAID management. It offers excellent flexibility, supporting multiple storage devices simultaneously, and is compatible with several Dell PowerEdge server models, including rack and tower configurations. The H355 is especially suitable for applications where storage management is handled by software solutions like VMware vSAN, Windows Storage Spaces, or Linux mdadm, providing the reliability and scalability needed for modern IT infrastructure. While it lacks onboard cache, the card is designed for environments where storage performance and reliability are prioritised over the need for a RAID engine. The H355 provides a cost-effective and efficient solution for connecting storage devices in high-demand server environments.