This X880-C1 metal case is specially designed for Raspberry Pi 4 Model B with [[X880]] V1.1 12V Dual SATA Gen3 HDD shield & X880-A1-A2 board, it is also support to use with X880 V1.1 board to match with X880-A3 acrylic plates & 2pcs SATA 7+15pin Male to Female cables if you do not have/use X880-A1-A2 board.