Do you have a question about the ThinkPad T420 and is the answer not in the manual?
General safety rules for working with machines during and after maintenance.
Safety rules to observe when working on electrical equipment.
Checklist to help identify potentially unsafe conditions in the machine.
Guidelines and strategy for replacing Field Replaceable Units (FRUs).
Procedure and considerations for replacing a hard disk drive.
Key precautions when handling and replacing the system board.
Information on Power-On, Hard-Disk, and Supervisor passwords.
Index that lists symptoms and their likely FRU or action.
Comprehensive list of all Field Replaceable Units (FRUs) for the computer.
List of Field Replaceable Units specific to the LCD module.
List of keyboard FRUs categorized by language.
Information on available AC power adapter models.
| RAM | Up to 16GB DDR3 |
|---|---|
| Wireless | Wi-Fi 802.11 a/b/g/n, Bluetooth 3.0 |
| Processor | Intel Core i5 or i7 (2nd generation) |
| Storage | HDD or SSD options |
| Display | 14-inch, 1366x768 or 1600x900 |
| Graphics | Intel HD Graphics 3000 or NVIDIA NVS 4200M |
| Operating System | Windows 7 Professional |
| Battery | 6-cell or 9-cell |
| Ports | 2 x USB 2.0, 1 x USB 3.0, VGA, DisplayPort, Ethernet |