StarTech.com SFP Dust Covers - 10 Pack Protect your network switches from dust and contaminants, by covering up the unused SFP slots Features Dust covers insert easily into unused SFP slots, to protect your network switches from dust and contaminants Made of durable Santoprene thermoplastic rubber (TPE) Tab makes it easy to insert and remove Work with SFP/SFP+ slots in optical networking equipment