HP TC4400 - Manual (Page 169)

Screw Listing
Maintenance and Service Guide A–11
Torx8 T8M2.0×20.0 Screw Locations
Table A-5
Torx8 T8M2.0×20.0 Screw (Continued)
Color Qty. Length Thread
Head
Width
Black 8 20.0 mm 2.0 mm 4.5 mm
Where used:
2 screws that secure the top cover to the tablet PC (documented in
Section 5.17 )
mm