AddOn Media Converters and Network Interface Cards are 100% compliant for all of our networking needs. ADD-MCC1GMM5M provides a 10/100/1000M Base-T to 1000Base-SX MMF fiber port. Economically priced. Stretch your IT budget by using AddOn products - DRAM, SFP/GBIC Transceivers, Media Converters, Fiber Optic NIC cards, etc. (MUST USE with ADD-RACK-16 or ADD-MRACK-16. In order to be used as standalone media converter, you must also purchase ADD-CHASSIS)