Case storage series. Support up to eight 3.5” or 2.5” sas-12g/ sata-6g drives with two LED indicators for displaying drive status. For CPU cooling, the CS381 has room to accommodate up to a 240mm radiator for nearly unlimited CPU choices. For extra security, The entire front can be locked to prevent unwanted drive removal and power button can also be locked together to prevent accidental power on/off. Designed to house Micro-ATX motherboard, the CS381 gives users a wide array of hardware options that includes support for 3.5” or 2.5” drive in SATA or SAS format, high-end graphics card, and RAID cards.