If you can share a photo or the exact motherboard code (printed on the board), I can give you a 100% precise review.
wmic baseboard get product, manufacturer, version, serialnumber If it shows “Samsung” and “B75S1” – then yes, it’s real. Otherwise, share the output here for accurate identification. 1.5/5 stars for modern use 3.5/5 stars for retro/office use (if you already own it) Avoid buying one today – even for $20, you’re better off with a used Dell Optiplex or HP EliteDesk with 6th/7th gen Intel. Keep only if you need a dirt-cheap Linux server, NAS, or Windows 7 retro PC. samsung b75s1 motherboard