USB Power shutdown method? And Hard drives?

there are two installations with two USB discs. Cant test “clank” as they are remote, not in my flat, but I guess Sholander has maybe disc with no usb prefix?

One would be WD obviously, second one is Transcend:

FIRST INSTALLATION

/dev/disk/by-id$ ls -la
total 0
drwxr-xr-x    2 root     root           160 Jun 22  2018 .
drwxr-xr-x    7 root     root           140 Jun 22  2018 ..
lrwxrwxrwx    1 root     root            13 Jun 22  2018 mmc-SD16G_0x3f680909 -> ../../mmcblk0
lrwxrwxrwx    1 root     root            15 Jun 22  2018 mmc-SD16G_0x3f680909-part1 -> ../../mmcblk0p1
lrwxrwxrwx    1 root     root            15 Jun 22  2018 mmc-SD16G_0x3f680909-part2 -> ../../mmcblk0p2
lrwxrwxrwx    1 root     root             9 Jun 22  2018 usb-WD_Elements_25A2_575841314141374632375032-0:0 -> ../../sda
lrwxrwxrwx    1 root     root            10 Jun 22  2018 usb-WD_Elements_25A2_575841314141374632375032-0:0-part1 -> ../../sda1
lrwxrwxrwx    1 root     root            10 Jun 22  2018 usb-WD_Elements_25A2_575841314141374632375032-0:0-part2 -> ../../sda2

/dev/disk/by-id$ mount
rootfs on / type rootfs (rw,size=823556k,nr_inodes=205889)
devtmpfs on /dev type devtmpfs (rw,relatime,size=823556k,nr_inodes=205889,mode=755)
proc on /proc type proc (rw,relatime)
sysfs on /sys type sysfs (rw,relatime)
/dev/mmcblk0p1 on /flash type vfat (ro,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,errors=remount-ro)
/dev/sda1 on /storage type ext4 (rw,noatime,data=ordered)

SECOND INSTALLATION

/dev/disk/by-id # ls -la
total 0
drwxr-xr-x    2 root     root           180 Jun 22  2018 .
drwxr-xr-x    7 root     root           140 Jun 22  2018 ..
lrwxrwxrwx    1 root     root             9 Jun 22  2018 ata-WDC_WD10SPZX-22Z10T0_WD-WXT1A77L239C -> ../../sda
lrwxrwxrwx    1 root     root            10 Jun 22  2018 ata-WDC_WD10SPZX-22Z10T0_WD-WXT1A77L239C-part1 -> ../../sda1
lrwxrwxrwx    1 root     root            13 Jun 22  2018 mmc-SB16G_0xd3e81aad -> ../../mmcblk0
lrwxrwxrwx    1 root     root            15 Jun 22  2018 mmc-SB16G_0xd3e81aad-part1 -> ../../mmcblk0p1
lrwxrwxrwx    1 root     root            15 Jun 22  2018 mmc-SB16G_0xd3e81aad-part2 -> ../../mmcblk0p2
lrwxrwxrwx    1 root     root             9 Jun 22  2018 wwn-0x50014ee607e0266c -> ../../sda
lrwxrwxrwx    1 root     root            10 Jun 22  2018 wwn-0x50014ee607e0266c-part1 -> ../../sda1
/dev/disk/by-id # mount
rootfs on / type rootfs (rw,size=823556k,nr_inodes=205889)
devtmpfs on /dev type devtmpfs (rw,relatime,size=823556k,nr_inodes=205889,mode=755)
proc on /proc type proc (rw,relatime)
sysfs on /sys type sysfs (rw,relatime)
/dev/mmcblk0p1 on /flash type vfat (ro,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,errors=remount-ro)
/dev/sda1 on /storage type ext4 (rw,noatime,data=ordered)