Product delivered before possible. Despite the reference differences due to hard drive capacity (planned for 2.0 TB) Works great with my Western Digital external disk 1.5TB (ref: WDBAAU0015HBK-00) Replaces although the original adapter Ktec: Model: KSAS0241200150HE Input: 100-240V - 50 / 60Hz 0.6A Output: 12V - 1.5A Very Satisfied