Durable 2mm Carbon Steel Raspberry Pi Rack Constructed from thick 2mm carbon steel for maximum durability and stability. Supports up to 5 Raspberry Pi modules (5/4B/3B+) and 5× 2.5" SSDs (max 7mm thickness). Ideal for raspberry pi 4 cluster rack, raspberry pi 5 rack mount, or pi rack setups Easy SSD Installation & Maintenance Front-removable brackets allow quick installation and replacement of 2.5" SSDs without disassembling the rack. Perfect for raspberry pi server rack or raspberry pi 1u rack mount projects Hand-Tightened Captive Screws Pre-installed hand-tightened screws allow tool-free installation and removal of Pi modules. Each front bracket is removable, making it convenient for maintenance and upgrades in your raspberry pi 1u rack or 1u raspberry pi rack mount PoE HAT & Other HAT Compatible Supports Official Raspberry Pi PoE HAT boards and UCTRONICS PoE hats, such as mini PoE hat(B082ZLDMZ6), PoE+ Hat(B0DBHFQ1TC), NVMe PoE+ Hat(B0FX3NY9RB)fan version