Supports data transfer up to 6.0G b/s. Supports 27mm half-height & 50mm full-height mSATA SSD. Supports socket 2 (B Key) & socket 3 (M Key).. Supports boot function. Supports any OS, like Windows, WinCE & Linux etc.. Compliant with PCI Express M. 2 specification 1.0. Compliant with SATA III specification.. 3 screw holes 2242/2260/2280 available to fix PCB board. 4 screw holes available to fix mSATA SSD.. Please note that it supports mSATA Mini PCI-E SATA SSD only. It does NOT supports Mini PCI-E (PATA), 1.8" Micro SATA & Airbook SSD.