21.79 cm?
KeySonic ACK-3400U
http://www.ebay.co.uk/itm/Keysonic-ACK3400U-Ultra-Compact-Mini-SoftSkin-Wired-Keyboard-USB-1-1-2-0-Black-/361395959652?_trksid=p2141725.m3641.l6368
KeySonic ACK-3400U
http://www.ebay.co.uk/itm/Keysonic-ACK3400U-Ultra-Compact-Mini-SoftSkin-Wired-Keyboard-USB-1-1-2-0-Black-/361395959652?_trksid=p2141725.m3641.l6368