dynabook PORTEGE X40-J Series Maintenance Manual

Maintenance Manual (960-942) 4-7
Replacement Procedures
4.7 Grip Color
Some screws have a colored grip area to help you determine the length of
the screw.
[Normal grip]
■ Normal length screws: Blue
■ Special length screws: Green
■ Tight grip screw: Yellow
“Special length screw” means screws whose length is indicated in an
integral number to the first decimal places such as 2.5 mm, 2.6 mm and so
on.
4.8 Screw Notation
To make maintenance of the computer easier, markings of the kinds of the
screws including the types and lengths of the screws are indicated on the
computer body.
Screw type + Screw length (mm)
Screw shape
B: Bind screw
F: Flat head screw
S: Super thin head screw
T: Tapping screw
U: Other screws (Unique screws: pan head, stud, etc.)
Example: B6 ... 6mm BIND screw
Screw color/material
B: Black/Nickel
C: Silver/Non-Hexavalent Chromate
U: Other screws (Unique screws: such as stud, etc.)
4.9 Memory media
Grip area
Insert or remove a Memory media in accordance with any instructions in
each Memory Media manual or the manuals of the computer system you
are using.

dynabook PORTEGE X40-J Series Specifications

General

Graphics	Intel Iris Xe Graphics
Wireless	Wi-Fi 6 (802.11ax), Bluetooth 5.1
Processor	Up to 11th Gen Intel® Core™ i7 Processors
Display	14.0" FHD (1920 x 1080) Anti-glare
RAM	Up to 32GB DDR4
Storage	Up to 1TB PCIe SSD
Operating System	Windows 10 Pro
Weight	Approx. 1.05 kg
Security	Fingerprint Reader, TPM 2.0
Ports	2 x Thunderbolt 4, 1 x USB 3.2, HDMI, microSD card slot