WinSxS is the Component Store. 'Disk Clean up - clean up system files' should normally clean up the windows updates held here, but I've noticed for a...
(1) -1 SM951 – 128GB M.2 AHCI PCIe SSD drive for Windows 7 and Lubuntu
(2) -1 WD SATA 3 - 1T for Data
(3) -1 WD SATA 3 - 1T for backup
(4) -1 850Pro SSD - 128G for Win 10
PSU:
Thermaltake 450W TR2 gold
Keyboard:
Old and good Chicony mechanical keyboard
Mouse:
Logitech mX performance - 9 buttons (had to disable some)