That Lenovo tablet with HDMI input is official, and it's a monster media machine
Lenovo Miix 2 10" Tablet to HDMI Cable
For Lenovo Tab M10 Fhd Plus 10.3 Tb-x606x Type-c Turn Hdmi Cable Connect Tv Projector 4k Hd Line 1080p Type-ctohdmi Hd Cable - Pc Hardware Cables & Adapters - AliExpress
LENOVO o - Adapter - USB-C male to HDMI female - 24 cm - black - 4K60Hz (3840 x 2160)
2M Micro HDMI to HDMI Cable for LENOVO IDEATAB LYNX K3011 Tablet to TV 3467309505372 | eBay
2m Micro HDMI to HDMI Cable for Lenovo Yoga 700 Laptop to TV HDTV 3507464768837 | eBay
Lenovo Yoga Tab 13 is an Android tablet with HDMI input (Use it as a portable display) - Liliputing
Lenovo USB Type C HUB to HDMI RJ45 card reader Lan Multi USB 3.0 PD Ad – Camael Services Store
Lenovo Idea Lenovo Usb C To Hdmi Plus Power Adapter Allows Thinkpad X1 Tablet 4X90K86567 | Zoro
Usb C Hub For Lenovo Tab P11 Pro 11.5" Tb-j706f J716f Tablet Type C Dock Usb3.0 4k Hdmi 3.5mm Pd Port Splitter Adapter Converter - Docking Stations & Usb Hubs - AliExpress
Lenovo ThinkPad X1 Tablet Mini-Display Port to HDMI Cable 03X6594 0B58409 - Notebookparts.com
Amazon.com: Cable for Lenovo Tab M10 (Cable by BoxWave) - SmartDisplay Cable - USB Type-C to HDMI (6 ft), USB C/HDMI Cable for Lenovo Tab M10 - Jet Black : Electronics
ReadyWired HDMI Cable Lead For Tablet Lenovo Yoga 2 Pro to TV - Walmart.com