The at tray4 is a shelf style unit designed to hold up to four allied telesis standalone media converters the at tray4 can be installed in a standard 19 inch rack this product allows network managers to have the flexibility to use allied telesis mc10 series 10mbps mc100 series 100mbps or mc1000 series 1000mbps media converters in rackmounting bracket the unit saves space and is handy to use as a standalone units the brackets are designed with a simple mounting system each indi