AGP slot for graphics cards. PCI slots for sound cards. Myself been using a Soundblaster Live 5.1 for years, a bit dated now I know but sound is good, now you can get them for about £20.
Surface Pro (2017) vs Surface Pro 4
Where HTML5 is headed next
MacBook Pro v Surface Pro 5
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.