The Blues are heavy favourites to defeat their non-league opponents, sitting 57 places higher in the football pyramid.
Pompey are fourth in League One while the the Linnets are 13th in the National League standings.
But Kenny Jackett will treat his side's opponents with as much respect as any other team they’d face.
The Pompey boss has admitted he’ll be fielding a strong side in a bid to reach the third round for a third successive season.
However, he did admit he could give some players who he feels need a breather a rest ahead of a long trip to Blackpool on Tuesday.
We’ve predicted the Blues’ starting line-up and bench to face King’s Lynn...
13. Sub 2 - Haji Mnoga
Was omitted against Oxford but a chance to be back among the squad. Photo: PinPeP
15. Sub 4 - Ben Close
Continues to battle for a starting spot, although he's been down the pecking order most of the season. Photo: PinPeP
16. Sub 5 - Andy Cannon
Could potentially do with small bit of respite given his energetic approach to games. Photo: Joe Pepler