The first few days all is well. Utilisaiton on a laptop. Screen lock without removing the key. Usual error message indicating that the key was not removed properly. But a month later, after closing the screen as usual without disassemble correctly, I shocked to find that the key is Lockee READ ONLY. Attempted formatted with OSX or Linux, can not nothing works. c is a firmware lock. even with the "dd" command, fdisk, etc. nothing to do. the key remains blocked read only = unusable. I am disgusted. AVOID!
