Lenovo N5901 Mini 1000DPI 70-Key Handheld Wireless Keyboard w/ Trackball Mouse - Black (2 x LR03)

Pros: Small controller for HTPC use. Keyboard part of controller works well. Controller can be used from good distance from your computer.

Cons: Trackball is not capable of accurately tracking and it often is not able to recognice movement at all. Trackball makes noise.

Other: Otherwise good product but low quality trackball disappoints seriously.

Pros: Good tactile feelings. Small and thought. Standard AAA battery HID device for mouse and keyboard

Cons: Trackball quality is low, so cursor positioning may be difficult, especially using in one hand only (you need to rotate this damned ball, then stop, firmly hold it in a needed position, then press a mousebutton, usually by finger of another hand)

Other: Except of trackball's surprisingly low quality, this device is above my expectations.

Pros: nice, softouch, Plastic quality is good, the media buttons are very effective, it has a led indicator for the communication

Cons: isn`t lenovo, the trackball sometimes dont work propertly,operating with a mini pc not working properly ug802II moments

Other: good, nice aspect, the trackball is close from the mouse left and right bottoms...proves to be a very compact keyboard, cute, cheap, useful, but really on images lenovo and was listed as the worst I found

Pros: Easy to hold in one hand and operate track-ball one handed. Keyboard is easy to use with spare hand for command entry. Acceptable range (even through a thin wall). Integrated dongle slot for storage without loosing it.

Cons: The Ctrl-Alt-Del (single) key is a bit of a worry if you are operating in console mode (in Linux, just turn Ctrl-Alt-Del reboots off if this is a concern). I assume this is to make Windows Logins easier, though the actual Ctrl-Alt-Del keys are perfectly accessible with the fingers of one hand. Trackball is a little plastic-y in feel (roll is a bit sticky, but not enough to disrupt use) but works well enough for low-intensity usage.

Other: Needed a small portable keyboard/mouse for keeping digital signage in our foyer and gallery spaces configured. This unit is working well for this purpose.