Hi, My 24 inch 2009 imac computer was repaired three or four weeks ago and the hard drive, logic board, power supply and power inverter cable was replaced. A few hours after the technician had left my home, I tried to remove two external devices (keyboard and mouse) from the usb port and it is impossible to remove them. My iMac computer stop working again a few days after it was repaired (as all the old hardware issues it was having previously have returned ) and since the next repair will be considered the third one, I'm not sure if it will be replaced with another computer and/or parts, i.e, logic board, hard drive, etc. My question is if Apple decides to replace the iMac with replacement parts (such as a logic board, hard drive,etc), how will the technician be able to replace these parts with the external devices (keyboard and mouse) stuck in the usb ports and even if he can remove these devices, is there a possibility that this will damage the computer? Thanks in advance for any feedback on this issue!