LAVA Computer MFG Inc.
nLTS Product Family - Reference Manual – A04
2 Vulcan St. Toronto, ON Tel: +1 416 674-5942 www.lavasimulcharge.com
Canada, M9W 1L2
Toll Free (US & Canada): 800 241-5282
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USB Host Operation with Simultaneous Mobile Device Charging
LAVA nLTS products allow the charging of select Lenovo mobile devices while interacting with
USB accessories. The LAVA products do not draw power from the Lenovo mobile device and
only allow USB accessory operation while being powered by an external power source.
Unlike many other Android mobile devices on the market, Lenovo mobile devices can operate as
a USB host while being charged. LAVA calls this feature SimulCharge, for simultaneous
charging while working with USB accessories. The System Requirements section states which
mobile devices have been tested for the ability to employ SimulCharge.
USB 2.0 Ports for User Accessories
The LAVA products include an internal USB 2.0 Hub, which is used to connect integrated and
user-supplied USB accessories. Up to three user-accessible USB 2.0 ports are available
depending on which LAVA product is selected.
User accessories are attached to USB 2.0 ports with a standard A-type receptacle. Each
receptacle provides power to each USB Accessory up to a maximum of 500 mA, as per the USB
specification. The power supply used must have sufficient capacity for the mobile device, LAVA
hardware, and USB accessories.
A LAVA product must be powered for a USB-A receptacle to function. The LAVA products
have a dedicated power input and are not intended to draw power from the tablet or mobile
phone they are connected to.
A power budget must be developed for a system to handle additional USB accessories and the
related cables. Power loss in each cable results in lower voltages at each device. Using self-
powered USB Hubs may be required in some systems, to offload the power supply responsible
for the tablet or mobile phone.