External Hard drive does not show up in my computer

WD External Drives WD Portable Drives
6

HDD S.M.A.R.T. scan recognises the  disk as

Model: WDC WD3200BEVT-75A23T0
Firmware: 01.01A01
Serial: WD-WX71A3019645
LBA: 625142448

The disk is recognised in Device Manager but not in Disk Management.

Please help!