Main Features IB-2223StS 2x 2.5" SATA Mobile Rack 2x 2.5" SATA HDD or SSD in 1x 3.5" bay Easy Swap® - tool less HDD or SSD installation and exchange Hard disk capacity not limited Support HDD height up to 9.5 mm SATA host interface 3.0 Gbit/s Low noise, fanless design LED for power and HDD access Plug & Play and Hot Swap Supports all operating systems For Professional Duty HDDs in the 2.5" form factor are getting more and more popular as their storage capacity is growing. It is only consequent to employ them in servers. That’s why ICY BOX offers a backplane that fits into a single 5.25" unit and is for four 2.5" SAS or SATA HDDs. The height of the HDDs may even be 15 mm, for greatest storage capacity. Two host connectors per HDD make possible the operation of SAS HDDs in dual channel mode. This ICY BOX works reliably even with huge amounts of data being pumped. That's a great recommendation for the hard duty in RAID systems. Accordingly demanding is the layout of the cooling. While the aluminium casing cools two 40 mm fans work reliably and silently. Everything is as solid and safe as you might know it from the ICY BOX backplanes fort he "big ones".