This uses reversal and charade - a reversal takes letters backwards, and charade joins word parts together in sequence.
Look for a short word that can be reversed ("turned up" is your indicator), then add it to a word meaning computer peripherals. The reversed word comes first.
Answer: PUMICE | Reverse "UP" to get "PU", then add "MICE" (computer peripherals) to make PUMICE (abrasive volcanic rock).