| Attribute |
Lenovo ThinkPad T440s (T440SI7-8-240) × | 
Lenovo ThinkPad T440s (20AQ006BGE-06) × |
| General | | |
| Model | Lenovo ThinkPad T440s | Lenovo ThinkPad T440s |
| Product code | T440SI7-8-240 | 20AQ006BGE-06 |
| Design | | |
| Product colour | Black | Black |
| Form factor | Clamshell | Clamshell |
| Brand | Lenovo | Lenovo |
| Family | ThinkPad | ThinkPad |
| Series | T | T |
| Model name | T440s | T440s |
| Part number | T440SI7-8-240 | 20AQ006BGE-06 |
| Market positioning | Business | Business |
| Release year (year) | 2019 | 2017 |
| Processor | | |
| Processor manufacturer | Intel | - |
| Processor family | 4th gen Intel Core i7 | 4th gen Intel Core i7 |
| Processor frequency (GHz) | 2.1 | 2.1 |
| Processor boost frequency (GHz) | 3.3 | 3.3 |
| Processor model | i7-4600U | i7-4600U |
| Processor cores | 2 | 2 |
| Processor threads | 4 | 4 |
| Processor lithography (Nm) | 22 | 22 |
| Processor socket | BGA 1168 | BGA 1168 |
| Processor cache (MB) | 4 | 4 |
| Memory | | |
| Internal memory type | DDR3L-SDRAM | DDR3L-SDRAM |
| Maximum internal memory (GB) | 12 | 12 |
| Memory clock speed (MHz) | 1,600 | 1,600 |
| Internal memory (GB) | 12 | 8 |
| Display | | |
| Display diagonal (inch) | 14 | 14 |
| Panel type | IPS | - |
| HD type | Full HD | Full HD |
| LED backlight | + | + |
| Touchscreen | + | + |
| Display resolution | 1920 x 1080 pixels | 1920 x 1080 pixels |
| Graphics | | |
| On-board graphics adapter | + | + |
| Discrete graphics adapter | - | - |
| On-board graphics adapter base frequency (MHz) | 200 | 200 |
| Maximum on-board graphics adapter memory (GB) | 74 | 74 |
| On-board graphics adapter model | Intel HD Graphics 4400 | Intel HD Graphics 4400 |
| Storage | | |
| Total storage capacity (GB) | 240 | 256 |
| Number of SSDs installed | 1 | 1 |
| SSD capacity (GB) | 240 | 256 |
| Card reader integrated | + | + |
| Storage media | SSD | SSD |
| Optical drive | - | - |
| Networking | | |
| Wi-Fi standards | - 802.11a
- 802.11b
- 802.11g
- wi-fi 4 (802.11n)
- wi-fi 5 (802.11ac)
| - |
| Bluetooth | + | + |
| Ethernet LAN | + | + |
| Ethernet LAN data rates (Mbit/s) | | |
| Wi-Fi | + | + |
| Bluetooth version | 4.0 | 4.0 |
| Ports and interfaces | | |
| USB 3.x Type-A ports | 3 | 3 |
| Combo headphone/mic port | + | + |
| Docking connector | + | + |
| USB Sleep-and-Charge | - | + |
| DVI port | - | - |
| Ethernet LAN (RJ-45) ports | 1 | 1 |
| Audio | | |
| Speaker power (W) | 1 | 1 |
| Audio chip | Realtek ALC3232 | Realtek ALC3232 |
| Built-in microphone | + | + |
| Camera | | |
| Front camera | + | + |
| Front camera HD type | HD | HD |
| Front camera resolution (pixels) | 1280 x 720 | 1280 x 720 |
| Keyboard | | |
| Numeric keypad | - | - |
| Full-size keyboard | + | - |
| Pointing device | ThinkPad UltraNav | ThinkPad UltraNav |
| Software | | |
| Operating system installed | Windows 10 Pro | Windows 8.1 Pro |
| Operating system architecture (bit) | 64 | 64 |
| Battery | | |
| Battery capacity (watt-hours) (Wh) | 23 | - |
| Battery life (max) (h) | 8 | - |
| Weight and dimensions | | |
| Weight (kg) | 1.59 | - |
| Height (mm) | 20.6 | 20.6 |
| Depth (mm) | 226 | 226 |
| Width (mm) | 331 | 331 |
| Power | | |
| AC adapter power (W) | 45 | - |
| Security | | |
| Cable lock slot | + | + |
| Fingerprint reader | + | - |
| Trusted platform module (TPM) | + | + |