Components of the system
BEETLE /M-III - Service manual 23
13.2 Inside view with UPS
1 Power supply unit with fan 2 Air duct (not with an O1 motherboard)
3 Carrier with hard disk(s) (2.5" or 3.5") 4 Accumulator
5 Battery Backup Unit (BBU) 6 Extension board with three PoweredUSB ports
(Retail Card), not with a O1 motherboard