iStarUSA BPU-350SATA 3x5.25" to 5x3.5" SAS/SATA 6.0 Gb/s Hot-Swap Cage

The iStarUSA BPU-350SATA is an internal hot-swap drive cage that converts three 5.25-inch bays into five 3.5-inch SAS/SATA drive bays, making it suitable for server or workstation builders who need more drive capacity and drive access without removing the cage.

Recommended For

• DIY NAS and home-server builders who have three available 5.25-inch bays and want to fit five hot-swap drives in a single internal cage.
• Server or workstation users who regularly replace or service SATA/SAS drives and want front-accessible trays instead of opening the computer for each drive change.
• Storage builders who need a drive cage for an internal RAID or JBOD setup and already have a compatible SATA/SAS controller or motherboard connections.
• Builders combining 2.5-inch and 3.5-inch drives who want removable trays and per-drive power and activity indicators in one internal enclosure.

Real-World Use Scenarios

• A home NAS or data-hoarding server has three unused 5.25-inch bays and needs more 3.5-inch drive capacity; the cage uses that space for five front-accessible drives, making it easier to add storage without replacing the case.
• A user building or upgrading a storage server wants to replace a drive without opening the case or dismantling the drive stack; the front trays provide direct drive access, provided the host system and controller support hot-swap.
• A homelab owner repurposes an older tower or server with several unused 5.25-inch bays; the cage turns those bays into a compact five-drive bank for a NAS, file server, or other local storage system.
• A small server or workstation needs multiple drives organized in one front-mounted unit; the cage consolidates five SATA or SAS drives and includes a fan and status indicators, while RAID requires a separate compatible controller.
• A storage-server builder plans a RAID or JBOD setup using several drives in a compact chassis; the cage provides the drive bays and connections, but the storage mode and redundancy depend on the separately selected controller or host software.

Spec Summary