HP TC4400 - Manual (Page 173)

Screw Listing
Maintenance and Service Guide A–15
Torx8 T8M2.0×5.0 Screw Locations
Table A-6
Torx8 T8M2.0×5.0 Screw (Continued)
Color Qty. Length Thread
Head
Width
Black 10 5.0 mm 2.0 mm 4.5 mm
Where used:
4 screws that secure the system board to the tablet PC (documented in
Section 5.21 )
mm