I wanted to follow up and report how I resolved this issue:
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Install two packages:
sg3_utils (Manjaro repository)
scsiadd (AUR) -
Find the hot plug device (make sure it’s in the dock and powered) with the command:
sudo echo 0 0 0 | tee /sys/class/scsi_host/host*/scan
Output will look like:
[3:0:0:0] disk ATA Samsung SSD 840 DB6Q /dev/sdc
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Using the device identification parameters from the scsi-scan output (host:channel:ID:lun) (numerals only). Example:
scsiadd -a 3 00 00 00
which should detect the device and cause udisk to mount it at /run/media/username/disklabel
To remove the device, first unmount it from the file system with the umount command, then run scsiadd with the -r option (ex:scsiadd -r 3 00 00 00) to uncouple the device from the SCSI bus.