Sonnet DM-ENC-2M-R - DuoModo Dual-Module Rackmount EnclosureThe Dual Module Rackmount Enclosure enables the interchangeable expansion of two DuoModo Expansion Modules. The choice is yours. Mix and match enclosures with modules to create your own custom Thunderbolt expansion system. Modular Design Whether you need to connect PCIe cards or a GPU to your computer without card slots, or want to mount a Mac mini in a desktop or rackmount enclosure with port and storage expansion, Sonnet's DuoModo line of mix and