I use bitsync to transfer files from my seedbox to my home network. The app itself is years old, closed source but just works.
Theres versions for arm, windows and Linux.
Use it via windows 10, Ubuntu 20lts currently but did also use the arm version on my wd mycloud and multiple arm based boards like raspberry pi 2, pi 4, orange pi pc and cubietruck.
I’m a big fan of dell wyse machines. Loads on ebay, ex business machines. X86 so decent support, decent dell power supply, on / off button / in cases and low power.
I have wyse 3040 for pihole cost 39.99
I have wyse 5070 with windows 10 for plex and running a Ubuntu 22 server in virtual box, cost 59.99