Most HDD boards have the unique BIOS(ROM or NVRAM chip) which includes the unique data to access the HDD system area. If the BIOS information is not compatible with your HDD, there is no way to read the HDD's data. Because of this, we should use the original PCB's BIOS when we swap PCB. BIOS CHIP SWAPPING IS A MUST.Before you purchase, please read:1) This is just a PCB (Printed Circuit Boards), not the whole Hard Drive.2) PCB board number is printed on the board, not on the sticker.3) These boards are USED, NOT brand new, the circuit board components not falling, the interface did not break. All PCBs have been tested before shipping.4) It is used for data recovery/repair issues, the PCB board has been tested and in good working condition. There is no Item specifics:Use: UniversalCertification: NONEOrigin: JP(Origin)Wireless communication: Wire ControlSupport app: NoChannel: 2Package: YesFrequency: 433 MHz
