classification: food/cooking

problem description:

the USB flash drive cannot be turned off. If you take out the USB flash drive or the mobile hard drive after turning it off, will this damage the USB flash drive or the mobile hard drive? Please give me expert advice. Thank you!

analysis:

no electricity will do no harm to the hardware. But now it's all USB2. , even if it is charged, it doesn't matter.

it may cause data loss.