Drive System: 110V, 60 HX, AC motor. 150 capacity. Travel Range: 14" verticle adjustment from 26" to 40". Full travel time is 18 seconds. Keybord Surface: Standard adjustable keyboard adjusts from 4" below to 1" above monitor surface. DataCenter mechanism adjusts from 6" below to 7" above work surface. Both have +9 degree to 15 degree tilt. Work Surface: Thermally-fused melamine with T-mold edge is standard. Datacenter Surface: 12"D x 27"W (minimum) for rectangular configurations.