A flying HDMI cable (including audio) is usually* connected to the lectern faceplate.
Note All post-2014 refurbished rooms support both HDMI(digital) inputs as well as VGA, namely:
G11(Byng Kendrick LT), Great Hall, MB220, MB253, MB304, MB411, 417, 419, MB486, MB504, MB518, MB603, MB651(Sumpner LT), MB653(Wright LT), MB708b, MB755-9, NW104b, NW109, NW805, NW807, NX02, Adrian Cadbury and Susan Cadbury LTs, SW309 and VSG03, VS110, VS112.
Note Post-2019 refurbs like MB108, MB550, MB554, MB517, MB502 are HDMI ONLY, no VGA support!
Some laptops and tablets may require a special AV adapter and or cable/s. Newer rooms also have wireless presentation if you don’t have the correct cable/s.
*except some ‘non-pool’ meeting rooms.