You do not own device if you cannot open it, I read on some forum. Or more probably you just want to swap disks not breaking the case. If you are owner of this portable disk you will find neither screws nor guidance how to open it up. On the wave of opening different plastic cases, here comes my “how to“.
My company laptop has SSD for system and extra HDD for large library of installers or vmware images. Having a chance to get USB HDD replacement I ordered 1TB to swap HDD disks. To my surprise new device looks ugly because it is really thick (22mm comparing to typical 12mm) and is designed not be opened – no screws, no instruction, stiff case hard to bent even fraction of millimeter.
I spent a quarter to open it up in a reversible way. Metal tools like screw drivers will surely leave marks on the edges. If you do not have plastic pry tool (GSM shops sell it for pennies) use guitar plectrum as I did.
Interesting thing is that inside I found Samsung label. I did not know that Seagate acquired Samsung HDD branch last year.