Recharging Time : USB-based charging Approx. 4 Hrs(full charge),
Quite often by the USB plug on the speakers. If by non-powered you mean powered by batteries, then normally by the AV/headphone connection on your laptop.
A USB on your wireless router allows you to share a USB connection with anyone in your network. It is labeled on your laptop as a trident logo.
You can use the Dragon DS Lite USB Power Charge Cable to recharge your DS with a USB port.The data cable isn't designed to do that.
You can purchase USB dongles which allow 3G connections to be made.
Yes, the USB power strip will charge your device when plugged into a laptop.
Unless a marker comes with a USB or charging port, the only way would be to change the batteries.
USB and PS2
Yes, most commonly these will be connected via USB connection.
Look up the model's chipset. Try the manufacturer's site, or google it.
You Plug a USB mouse into a USB Drive in the laptop, and now you can use your usb mouse with your laptop for anything.
It is likely a loose connection. If this is because the cables are poorly designed, or the laptop's USB ports are too wide, there is no real fix. It's just sloppy design.
I think a newer keyboard with usb connections would be your best bet , plug in into usb connection and plug and play windows should reconize it.