Height adjustment range optimized to enable sit-to-stand use of a fixed-height desk when paired with Chief’s K1-series dynamic monitor arms, the KBD-S2S-19T provides easy placement of the keyboard and mouse for better ergonomic support. S2S keyboard arm provides easy height adjustment range from 7” (178 mm) above to 5.5” (140 mm) below the work surface to meet the natural typing height of a user whether sitting or standing at the workspace. 19T keyboard tray provides ample room for most keyboards, and ergonomic positioning of mouse tray.