This 10-pack of SFP dust covers provides an inexpensive way to protect your network switches and fiber optic equipment from dust and contaminants, by covering the exposed and unused SFP slots. Simply insert the dust covers into any empty SFP/SFP+ slots in your network switches. Made of Santoprene thermoplastic rubber (TPE), the durable dust covers keep out dirt and dust, protecting your networking equipment against contaminants that could cause connection issues. A handy tab makes it easy to insert and remove the SFP dust covers.