Has anyone disassembled a recent Seagate Expansion Portable (4TB)?

Hi,

I'm currently upgrading a cube-PC with new Harddrives; SSD for System and one for "in work"-Data (1TB) are available. Now I need a "Datavault".

Checking prices for 2,5"-HDD, I found a reasonable offer for the Seagate Expansion Portable (4TB), Seagate-Number STEA4000400. Probably built in 2018 or early 2019 (new stock)

Has anyone disassembled said harddisc? Questions are:

a) which harddrive is installed?

b) can the harddrive be installed internally? (does the HDD have SATA-connectors, or is the usb-thingy "fixed" as with the WD-portable ones?)

Thanks for your help!

(If I overlooked a similar thread: links are welcome - I got no luck with my search-terms sry)