Lenovo ThinkPad TrackPoint Keyboard II
Provided by the ASK Keyboard Directory
Model KC-1957
eg, P/Ns 4Y40X49493, 4Y40X49499, 4Y40X49500, 4Y40X49501, 4Y40X49505, 4Y40X49506, 4Y40X49507, 4Y40X49512, 4Y40X49514, 4Y40X49520, 4Y40X49522, 4Y40X49526
Second generation Precision-style ThinkPad wireless keyboard with TrackPoint IV, made by Chicony for Lenovo. It's capable of communicating via Bluetooth or 2.4GHz wireless via a dongle.