Answer:
For tax purposes, assets that are converted to business use from personal, should use the lesser of the Fair Market Value (FMV) at the time of conversion or the cost of the asset.
Computer.
The FMV is less than the purchase price so the depreciable basis is:
= $800
Printer
The FMV is less than the purchase price so the depreciable basis is:
= $150
Desk
The FMV is less than the purchase price so the depreciable basis is:
= $1,000
File Cabinet
The purchase price is less than the FMV so the depreciable basis is:
= $200