With prices falling and storage pace increasing, 2 hard disk drives former primarily designed for mobile PCs, but now they are becoming the hard drive of choice for quiet PC enthusiasts . Especially now that Solid State Drive (SSD) technology is becoming a must-have for users who want their PCs to be totally silent. Twin Mounter 2.5 allows installation of up to two 2.5' hard disk drives or SSDs in one 3.5' bay which additionally means saving space in traditional PC cases.