I would recommend placing STEP 21 (L/R speaker connector disconnect) before STEP 17…because the speaker wires sort of go over/on top of the connector in STEP 18. By putting step 21 first, those wires can be lifted and pushed aside making steps 17-20 easier.
I concur with Pim. The WiFi card Torx screw in question is a T6 size.
I would recommend placing STEP 21 (L/R speaker connector disconnect) before STEP 17…because the speaker wires sort of go over/on top of the connector in STEP 18. By putting step 21 first, those wires can be lifted and pushed aside making steps 17-20 easier.