Yeah, that's right. It's a Set-up USB recovery media disk. However, I don't know what the EFI folder, sources folder and a reagent XML document are?? When I first started up my system, I was automatically prompted to run backup media. This was prior to inserting the flash drive. You don't have to know what any of those folders on the USB stick are. Just set the stick aside, and if the time comes, just try to boot from that stick and it will probably do its thing automatically, or prompt you...
I just bought my new 3881 desktop pc i5, 1 tb hdd & 256 ssd desktop. However, I'm slightly confused about my storage options. Which letter in File Explorer represents my hard drive? It shows OS (C:), which I presume is the SSD, DATA (D:) and RECOVERY (H:). The recovery flash drive that came with my PC already has data on it. Do I need do anything with this flash drive?  Any help would be gratefully appreciated.
Identifying storage options on the i5 3881 desktop