The caddy is designed for IBM x3650 server that use 2.5 #34; SAS SATA SCSI hard drives. Features: Compatible for IBM x3650 server that use 2.5 #34; SAS SATA SCSI hard drives. mold stamping shape, excellent consistence, convenient to use. Durable metal and plastic material ensure superior quality. Great design for ventilation performance. Comes with 4 mounting screws, easy to install. Specifications: P/N: 44T2216 Size: 2.5 #34; Comaptibility: incomplete statistics x3850 X5, x3950 X5, x3650 M3 7945, x3650 M2 7947, x3550 M3 7944, x3550 M2 7946, x3500 M3 7380, x3500 M2 7839, x3400 M3 7378/7379, x3400 M2 7836,4193, x3250 M3 4251, 4252, x3200M3 7327, 7328 All xSeries M3 and M4 servers that use 2.5 #34; hotswap SAS/SATA drives Blade Center HS12 1916, 8014, 8028 Blade Center HS22 7870, 1936 Item size: 14 6.5 1.6cm / 5.51 2.60 0.63in L W H Item weight: 74g / 2.6oz Package List: 1 Caddy 4 Screws