iPad (1st Gen 2010) Charging Adapter (Polyurethane Travel Chargers) - Make the impossible possible, enable your iPad to charge through any USB port or USB hub
Apple 10W USB Power Adapter Sync Charger A1357 + 30 Pin USB cable iPad iphone | eBay
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Amazon.com: Replacement 96W C Type Wall Charger USB-C Power Adapter Compatible with MacBook Pro,MacBook Air,ipad Pro, Samsung Galaxy and All USB C Device, Include Charge Cable(2m) : Electronics
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Review: Apple iPad 10W USB Power Adapter | iLounge