This drive was removed from an external hard drive that did not power up due to a bad power supply.   I powered the drive up with the 4 pin power connector from a computer power supply and I could hear the disks spin in the drive.   This is all the testing I've done.   The drive was probably manufactured around 1990 with 330 MB and 3600 rpm.  The drive has a 50 pin connector for data transfer.    It weighs about 3 lbs 9 oz and I will ship in a 10X8X6 box weighing 5 lbs. 

This equipment is being sold "as is" with the user assuming all responsibility for its use.  There is a 30 day return privilege.