Amazon.com: Sanpyl Mini USB Multimedia Keyboard,2.4G USB Wireless Keyboard Trackball Wireless Keyboard Controller and Mouse Combo with Touchpad for TV Computer : Electronics
Printec-DS | Keyboard with Trackball
Trackball vs. Mouse: The Best Trackballs For Your Desk
Sun Solaris Compatible 1U Rackmount 19″ LCD Keyboard Drawer, Trackball (b), Optional Touchpad Keyboard (e), Optional 8 or 16 ports USB KVM, Optional two console – RackmountNet