The Ergotron 3158386 PowerShuttle (PS) Laptop Management Cart universal interface charges up to 20 devices (works with laptops, netbooks and tablets), and manages software on laptops and netbooks through an Ethernet connection. PowerShuttle® Technology optimizes total charge time while safely preventing electrical circuit overload by efficiently grouping the number of devices that are charged at one time. Works in any environment, including education, healthcare and enterprise applications. The 3158386 is lightweight, up to 49% smaller than competitive product, this compact cart design makes it easy to safely move from room to room. It features four 4" (10 cm) medical-grade, dual-wheel locking casters that allow easy push/pull mobility. Country-specific power strip is provided to plugin 20 AC adapters. Unique, flexible design accommodates a variety of brick and plug styles for laptops, netbooks and tablets that won’t fit in standard outlet strips. It accommodates IT hardware such as a WAP and standard 1U Ethernet switch (WAP and Ethernet switch not included). Pre-installed CAT 6 Ethernet cables enable management of laptops for software updates via wake-on-LAN (with customer supplied Ethernet Switch). For user and equipment safety, the ENTIRE cart is tested and certified to UL 60950 and 1668 standards; this means it is completely certified, at the levels of both the power system and cart mechanics. Ships fully assembled.

How it works
When the cart is plugged in, the system automatically measures and stores the current draw of the switch, the WAP, anything plugged into the external outlet, and finally the power strips inside the cart (5 devices per power strip). Max wall current is 12A for 100-120V countries and 8A for 220-240V countries. The PowerShuttle subtracts the current for the always-on devices (auxiliary outlets) from the max wall current. This leaves the amount of current available for the power strips. PowerShuttle then groups the power strips in the minimum number of groups for charging without exceeding the max wall current.