HD-324 is a 4 in 3 SATA HDD Hot swap rack module that accommodates HDD storage expansion for all heavy users in data accessing and storage. This rack can be installed for most PC chassis which contain 3 ODD bays space. The rack can support most HDD in the market (SATA-I, SATA-II, SATA-III, SAS) and also support high speed data transferring up to 6GB. The user can also install 2.5” SSD hot swap on this rack.