I have same interface and use it to recover files from other disks or back-up before an OS Re-install:
1. Hdd must be powered with adapter included with interface (directly)
2. On interface there is a green (power) and a red (ATA or S-ATA) led... which should be lited when interface is connected to USB 2.0 port in computer.
3. Then you should see the disk in device manager => drive management.... or directly in My Computer.
Need more for "RECOVER" part. I assumed that disk is functional and files were deleted accidentaly or disk formatted.
4. Use RECUVA for file recovery or Partition Table Doctor for lost partitions. Make sure you recover the files onto another disk!
PS: For ATA interface put jumpers in SLAVE mode . Some disk wont work properly with Master mode on this interface.