This is a 3.5" to 2.5" hard drive (HDD) or solid state drive (SSD) spacer for the Sony PlayStation2 fat model. It will allow you to use your PS2 hard drive adapter with a smaller 2.5" drive in the 3.5" drive bay without worrying about it flopping around. Works with SATA and IDE hard drives. Compatable with all Sony Playstation 2 fat models (SCPH 30000 & 50000). Does not fit SCPH-70000 and SCPH-90000 PS2 slim series.