| Processor | Lenovo ThinkPad E15 Gen 4 21E60078US 15.6" | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Processor model | i5-1235U | i5-6200U |
| Processor manufacturer | Intel | |
| Processor series | | Intel Core i5-6200 series |
| Processor socket | | LGA 1356 (Socket B2) |
| Processor type | Core i5 | |
| Processor threads | | 4 |
| Processor generation | 12th Gen | |
| Processor cores | | 2 |
| Processor core | Deca-core (10 Core) | |
| Processor codename | | Skylake |
| Maximum turbo speed | 4.40 GHz | |
| Chipset manufacturer | Intel | |
| Processor family | | 6th gen Intel Core i5 |
| Processor frequency | | 2.3 GHz |
| Processor boost frequency | | 2.8 GHz |
| Processor cache | | 3 MB |
| Thermal Design Power (TDP) | | 15 W |
| Software | Lenovo ThinkPad E15 Gen 4 21E60078US 15.6" | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Operating system | Windows 11 Pro | |
| Operating system platform | Windows | |
| Operating system language | English | |
| Operating system installed | | Windows 10 Pro |
| Operating system architecture | 64-bit | 64-bit |
| Display & Graphics | Lenovo ThinkPad E15 Gen 4 21E60078US 15.6" | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Screen size | 15.6" | |
| Screen resolution | 1920 x 1080 | |
| Panel type | | IPS |
| Screen mode | Full HD | |
| Aspect ratio | | 16:9 |
| Display screen technology | In-plane Switching (IPS) Technology | |
| Display diagonal | | 15.6 inch |
| Display resolution | | 1920 x 1080 pixels |
| Graphics controller manufacturer | NVIDIA | |
| HD type | | Full HD |
| Graphics controller model | GeForce MX550 | |
| LED backlight | | Yes |
| Graphics memory capacity | 2 GB | |
| Touchscreen | No | No |
| Graphics memory technology | GDDR6 | |
| Graphics memory accessibility | Dedicated | |
| Discrete graphics adapter | | No |
| Discrete graphics adapter model | | Not available |
| Maximum on-board graphics adapter memory | | 1.74 GB |
| Number of displays supported | | 3 |
| On-board graphics adapter | | Yes |
| On-board graphics adapter base frequency | | 300 MHz |
| On-board graphics adapter dynamic frequency (max) | | 1000 MHz |
| On-board graphics adapter family | | Intel HD Graphics |
| On-board graphics adapter model | | Intel HD Graphics 520 |
| On-board graphics adapter OpenGL | | 4.4 |
| Memory | Lenovo ThinkPad E15 Gen 4 21E60078US 15.6" | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| System memory form factor | On-board SoDIMM | |
| System memory speed | 3200 MHz | |
| System memory technology | DDR4 SDRAM | |
| Maximum supported system memory | 40 GB | |
| On-board memory | 8 GB | |
| On-board memory technology | DDR4 SDRAM | |
| Total Installed system memory | 8 GB | |
| Total number of memory slots | 1 | |
| Internal memory | | 8 GB |
| Maximum internal memory | | 16 GB |
| Memory clock speed | | 1600 MHz |
| Memory layout (slots x size) | | 1 x 8 GB |
| Memory slots | | 2x SO-DIMM |
| Internal memory type | | DDR3L-SDRAM |
| Storage | Lenovo ThinkPad E15 Gen 4 21E60078US 15.6" | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Drive type | SSD | |
| SSD form factor | NVMe M.2 PCI Express | |
| Total solid state drive capacity | 256 GB | |
| SSD capacity | | 256 GB |
| Storage media | | SSD |
| Number of SSDs installed | | 1 |
| Total storage capacity | | 256 GB |
| Optical drive type | No | DVD Super Multi DL |
| Card reader integrated | | Yes |
| Compatible memory cards | | MMC, SD, SDHC, SDXC |
| Network & Communication | Lenovo ThinkPad E15 Gen 4 21E60078US 15.6" | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Ethernet | Gigabit Ethernet | |
| NFC | No | |
| Wimax | No | |
| Wireless LAN standard | IEEE 802.11ax | |
| Wireless LAN | Yes | |
| WWAN Supported | No | |
| 3G | | No |
| 4G | | No |
| Bluetooth | Yes | Yes |
| Bluetooth version | | 4.1 |
| Ethernet LAN | | Yes |
| Wi-Fi | | Yes |
| Wi-Fi standards | | IEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n |
| Interfaces/Ports | Lenovo ThinkPad E15 Gen 4 21E60078US 15.6" | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| HDMI | Yes | |
| Network (RJ-45) | Yes | |
| Number of Thunderbolt 4 Ports | 1 | |
| Number of USB 3.2 Gen 1 Ports | 1 | |
| Total Number of USB Ports | 2 | |
| HDMI ports quantity | | 1 |
| Headphone outputs | | 1 |
| Combo headphone/mic port | | Yes |
| DC-in jack | | Yes |
| VGA (D-Sub) ports | | 1 |
| Docking connector | | Yes |
| Ethernet LAN (RJ-45) ports | | 1 |
| Microphone in | | Yes |
| USB 3.0 (3.1 Gen 1) Type-A | | 4 |
| USB Sleep-and-Charge | | 1 |
| Input Devices | Lenovo ThinkPad E15 Gen 4 21E60078US 15.6" | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Keyboard backlight | No | |
| Keyboard backlit | | Yes |
| Keyboard number of keys | | 102 |
| Numeric keypad | | Yes |
| Pointing device | | Clickpad |
| Windows keys | | Yes |
| Audio | Lenovo ThinkPad E15 Gen 4 21E60078US 15.6" | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Audio system | | DTS Studio Sound |
| Built-in microphone | | Yes |
| Built-in Devices | Lenovo ThinkPad E15 Gen 4 21E60078US 15.6" | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Front Camera/Webcam | Yes | |
| Finger Print Reader | No | |
| Front camera | | Yes |
| Power | Lenovo ThinkPad E15 Gen 4 21E60078US 15.6" | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Maximum power supply wattage | 65 W | |
| AC adapter input voltage | | 100 - 240 V |
| AC adapter output current | | 2.37 A |
| AC adapter output voltage | | 19 V |
| Security | Lenovo ThinkPad E15 Gen 4 21E60078US 15.6" | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Cable lock slot | | Yes |
| Cable lock slot type | | Kensington |
| Fingerprint reader | | Yes |
| Design | Lenovo ThinkPad E15 Gen 4 21E60078US 15.6" | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Product color | Mineral Metallic | |
| Features | Anti-glare Screen | |
| Brand | | Toshiba |
| Family | | Tecra |
| Model name | | Z50-C-143 |
| Part Number | | PT571E-06H03QEN |
| Product type | | Notebook |
| Form factor | | Clamshell |
| Colour of product | | Metallic |
| Depth | 9.4" | 258 mm |
| Width | 14.4" | 379 mm |
| Height | 0.74" | 23.2 mm |
| Weight | 3.75 lb | 2.2 kg |
| Release Date | | 2018-01-10 |
| Battery Information | Lenovo ThinkPad E15 Gen 4 21E60078US 15.6" | Toshiba Tecra Z50-C-143 PT571E-06H03QEN |
| Battery type | | Lithium-Ion (Li-Ion) |
| Battery life | | 8 h |
| Number of battery cells | | 4 |
