| Attribute |
Lenovo ThinkPad E490 (20N80028MX) × | 
Lenovo IdeaPad C340 (81N400L3AX) × |
| General | | |
| Model | Lenovo ThinkPad E490 | Lenovo IdeaPad C340 |
| Product code | 20N80028MX | 81N400L3AX |
| Design | | |
| Product colour | Black | Blue |
| Form factor | Clamshell | Convertible (Folder) |
| Brand | Lenovo | Lenovo |
| Family | ThinkPad | IdeaPad |
| Series | E | C |
| Model name | E490 | C340 |
| Part number | 20N80028MX | 81N400L3AX |
| Market positioning | Business | - |
| Release year (year) | 2019 | 2019 |
| Processor | | |
| Processor family | 8th gen Intel Core i7 | 8th gen Intel Core i7 |
| Processor frequency (GHz) | 1.8 | 1.8 |
| Processor boost frequency (GHz) | 4.6 | 4.6 |
| Processor model | i7-8565U | i7-8565U |
| Processor cores | 4 | 4 |
| Processor cache (MB) | 8 | 8 |
| Memory | | |
| Internal memory type | DDR4-SDRAM | DDR4-SDRAM |
| Maximum internal memory (GB) | 32 | 16 |
| Memory clock speed (MHz) | 2,400 | 2,400 |
| Internal memory (GB) | 16 | 16 |
| Display | | |
| Display diagonal (inch) | 14 | 14 |
| Panel type | IPS | TN |
| HD type | Full HD | Full HD |
| LED backlight | + | + |
| Touchscreen | - | + |
| Dual-screen | - | - |
| Display resolution | 1920 x 1080 pixels | 1920 x 1080 pixels |
| Graphics | | |
| On-board graphics adapter | + | + |
| Discrete graphics adapter model | - | NVIDIA GeForce MX230 |
| Discrete graphics memory type | - | GDDR5 |
| Discrete graphics adapter | - | + |
| Discrete graphics adapter memory (GB) | - | 2 |
| On-board graphics adapter model | Intel UHD Graphics 620 | Intel UHD Graphics 620 |
| Storage | | |
| Total storage capacity (GB) | 512 | 512 |
| Number of SSDs installed | 1 | 1 |
| SSD capacity (GB) | 512 | 512 |
| Card reader integrated | + | + |
| SSD form factor | M.2 | M.2 |
| Storage media | SSD | SSD |
| Optical drive | - | - |
| Networking | | |
| Wi-Fi standards | | |
| Bluetooth | + | + |
| Ethernet LAN | + | - |
| Ethernet LAN data rates (Mbit/s) | | - |
| Wi-Fi | + | + |
| 4g | - | - |
| 3g | - | - |
| Bluetooth version | 5.0 | 4.2 |
| Ports and interfaces | | |
| USB 3.x Type-A ports | 2 | 2 |
| USB 3.x Type-C ports | 1 | 1 |
| Combo headphone/mic port | + | + |
| USB 2.0 ports | 1 | - |
| USB Sleep-and-Charge | + | + |
| HDMI ports quantity | 1 | 1 |
| Ethernet LAN (RJ-45) ports | 1 | - |
| Audio | | |
| Speaker power (W) | 1.5 | 2 |
| Built-in microphone | + | + |
| Camera | | |
| Front camera | + | + |
| Front camera resolution (numeric) (MPixel) | - | 1 |
| Front camera HD type | HD | HD |
| Keyboard | | |
| Numeric keypad | - | - |
| Keyboard backlit | + | + |
| Pointing device | ThinkPad UltraNav | Touchpad |
| Software | | |
| Operating system installed | Windows 10 Pro | Windows 10 Home |
| Operating system architecture (bit) | 64 | 64 |
| Battery | | |
| Battery capacity (watt-hours) (Wh) | 45 | 45 |
| Battery life (max) (h) | 13 | 8 |
| Weight and dimensions | | |
| Weight (kg) | 1.75 | 1.65 |
| Height (mm) | - | 17.9 |
| Depth (mm) | 242 | 229 |
| Width (mm) | 329 | 328 |
| Power | | |
| AC adapter power (W) | 65 | 65 |
| Security | | |
| Cable lock slot | + | - |
| Fingerprint reader | + | + |
| Trusted platform module (TPM) | + | + |