42R4131 xSeries 3.5" Hot-Plug Tray for 3.5 sas,sata hdd. new with spare packing . in stock xSeries 3.5" tray, caddy ... with 3.5-inch drive enclosures: xSeries 3250, 306m, 3400, 3455, 3500, 3550, 3600, 3650, 3655, 3700, 3755, 3800, 3850, System Storage Disk System ... DS3200, DS3300, DS3400, RD100 and RD200 and others 42R4131 xSeries 3.5" Hot-Plug Tray