I have 4 Seagate Cheetah 15K.3 18.4GB. Model Number: st318453LW
I do not have the proper cables to test these but I am selling them cheap 4x for $30 obo. These were taken out of a old computer due to motherboard failure. They had no signs of hard drive failure so I'm almost positive they are still working.
Side picture of four hard drives
Top view of hard drive
If you want more pictures feel free to ask. Paypal orders, will ship At earliest Monday, the 14th of April