[07/05/2018] WD My Book 系列桌上型外接硬碟，容量 4TB (WDBBGB0040HBK-NESN)，WD 4TB My Book Desktop External Hard Drive – USB 3.0 – WDBBGB0040HBK-NESN，特價只要$81.10 USD。Prime境內免運費。哪裡買: amazon。