This manual describes the features and use of the ThinkPad Edge E420 and E520 notebook computers.
The Lenovo ThinkPad Edge E420/E520 User Guide provides detailed information on hardware layout, safety guidelines, and operating instructions for the two laptop models. It includes sections on product overview, system specifications, built‑in ThinkVantage technologies, and how to use the keyboard, pointing devices, and connectivity options.
Additional chapters cover security features, battery management, device replacement, recovery tools, and troubleshooting. The guide also contains regulatory notices, disposal instructions, and contact information for Lenovo support.
| E420 Width | 343.4 mm (13.52 in) |
|---|---|
| E420 Depth | 234 mm (9.21 in) |
| E420 Height | 29.3 to 33.1 mm (1.15 to 1.30 in) |
| E520 Width | 380 mm (14.96 in) |
| E520 Depth | 249 mm (9.8 in) |
| E520 Height | 30.4 to 33.6 mm (1.20 to 1.32 in) |
| Heat Output (both models) | 65 W (222 Btu/hr) max or 90 W (307 Btu/hr) max |
| Power Source | Sine‑wave AC 100‑240 V, 50‑60 Hz |
| Battery Pack | Lithium‑ion (Li‑Ion) |
The E420 measures 343.4 mm wide, 234 mm deep, and 29.3 to 33.1 mm high.
Contact the place where you purchased the laptop or a Lenovo service provider for a replacement, and follow the disposal instructions in the guide.
The Safety and Warranty Guide and Regulatory Notice are available on Lenovo’s support website under User Guides & Manuals.