The keyboard is called TEX Shinobi, the variation is with the silent red switches but you can buy other switches or buy a DIY version. Lenovo TrackPoint II (Bluetooth version): Lenovo Trackpoint (Older version without Bluetooth): TEX Shinobi from here: 00:00 - Start 00:02 - TEX Shinobi sound test 01:37 - Lenovo TrackPoint II sound test 02:17 - Why you need a TrackPoint 07:52 - Bluetooth Module 08:15 - Labels and Switches 12:55 - Typing test
Источник: rutube.ru