I had a century 4-bay (expensive, 1 yr warranty only ) long ago. The power adapter (built-in) died in 13 months of use (一過保就燒)! Considering the repair cost was pretty high (checked at various repair shops), sold the unit at a very cheap price (considered as spare parts) at 2nd hand market .
Century...expensive but not reliable/durable! Won't go for such brand again!