This has been checked with a fairly new Ipad model and a Windows based PC for operation and pairing. The unit has a magnetic strip along the edge which can be used to hold the Ipad together with the keyboard when transporting it.
eBay
Keyboard Lube Kit 7-Piece Set with Switch Opener Puller Tweezers for Custom Keyboard, Keyboard Lube Tools
Aliexpress UK
In good used condition, with cable and box. Fully working
eBay
PU Leather Keyboard Case Wireless Keyboard Storage Bag For Logitech K380 Keyboard Dust Cover
Aliexpress UK
Brookstone Bluetooth Keyboard With Folio Case For IPad 2 Tablet Dark Brown Leather. The keyboard works perfectly. It connects via BlueTooth and is easily removed from the case for stand alone use if you don’t want to use the case.
eBay
Duck Theme Mechanical Keyboard Duck Call Sound Custom Keyboard Press Duck Call Creative Gift Keyboard Tablet Laptop Accessories
Aliexpress UK
Keyboard dock only.
eBay
Hot Swappable Mechanical Keyboard Gasket Bluetooth 2.4G RGB Backlit Gasket Structure Keyboard 3 Mode Customized Keyboard
Aliexpress UK
Good condition with manual and USB lead for charging. Works with iPad 2. 3 and 4 and maybe others?.
eBay
EMTRA Bluetooth Wireless Keyboard Portable Keyboard for Ipad Laptop Tablet Rechargeable Gaming Keyboard for Android IOS Windows
Aliexpress UK
It's in excellent working and cosmetic condition comes with box only. Box slightly damage you can see on the pictures
eBay
Holy60 Keyboard Base Plate Custom hollow Anime Keyboard Base Acrylic Case for GH60/mad60/Wooting/rakka Keyboard Plate Accessory
Aliexpress UK
The Logitech Ultrathin Keyboard Cover is a sleek and stylish accessory designed specifically for Apple iPad 2 and 3rd & 4th gen. Made from durable metal/aluminium material, it features a glossy white finish that adds a touch of elegance to your device. With Bluetooth connectivity and USB powered functionality, this keyboard folio/case offers convenient typing experience on the go. The magnetic closure ensures secure attachment to your iPad, while the rechargeable battery powering ensures long-lasting use. Upgrade your iPad with this Logitech keyboard cover for enhanced productivity and style.
eBay
Wireless keyboard, 10 inch slim, tablet/laptop wireless keyboard, ipad mini keyboard
Aliexpress UK
In working order. Haven't used this in a long time. obviously a little dated now but still functional. Does not include ipad charger! I only have one and I have another 2nd generation I use. Sorry! they are very easy to come by and cheap to buy though. I'll include a lead to charge Bluetooth keyboard.
eBay
Holy60 Keyboard Case Wooting 60HE GH60 Hollow Aluminum Keyboard Shell 60% Keys Layouts For Mad 60he Win60 GT60 Gaming Keyboard
Aliexpress UK