dynabook PORTEGE X40-J Series Maintenance Manual

Maintenance Manual (960-942) H-1
Appendix H
EC/KBC Rewrite Procedures
It is necessary to rewrite the EC/KBC system program when the following
changes are made.
1. Replacing of system board
2. Replacing of LCD
The EC/KBC can’t be updated solely. It will be updated simultaneously
during the BIOS update.
As for the BIOS update, refer to Appendix G.

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