SOHW-1693SX Power Supply and Disassembly Questions

I’ve recently obtained one of these external units (SOHW-1693SX), but I do not have the corresponding power supply.

It’s rated at 12v 1.5A and 5v 1.5A.

Can anyone provide me with the pinout (which pins are which voltage) for the power supply?

Additionally, is there anyone who can tell me how to get this thing apart? I’ve gotten the case open, and I have removed the drive from the case. However, the USB and power connectors are in a metal box that slides onto the rear of the drive, and I cannot get this metal box seperated from the drive. Do I just have to pull really hard or what?

Where did you get this drive from that they didn’t give the right power supply?