The HP G1i Tower 3.5in HDD Expansion Module is a purpose-built storage accessory that adds a 3.5-inch hard drive bay to compatible HP G1i Tower desktop systems, including the HP ProDesk 4 Tower G1i and HP Z1 G1i. Designed for IT teams looking to expand internal storage capacity without replacing existing hardware, this official HP accessory integrates seamlessly into the G1i TWR platform for a clean, supported upgrade path.

The module accommodates any standard 3.5-inch HDD, making it straightforward to increase on-site storage in office or workstation environments. It is frequently paired with the HP G1i TWR 3.5in HDD Carrier (BJ3M6AA) for a complete installation. Visit to secure your order enterprise-grade hardware with expert support.