[G4] Encrypted External Hard Drive

[Ron Michael]

I'm looking for a USB or Firewire external hard drive with encryption. 
They use a key that is inserted in the back of the drive to turn the 
encryption on and off. It's not software-controlled. I've found a 
couple using Google but they're not at a store I prefer to do business 
with. No returns, restocking, etc. And I want to be sure it works. A 
couple of the stores wouldn't even answer my pre-sale email questions. 
Thought I would try here to see if any of you have purchased one and 
are using it successfully. Would like to know where you got it, etc. 
It's for a Mac G4 mirror door 1.25mhz with OS 10.3.9.
Thanks.
Ron