| Attribute |
ASUS VivoBook X542UA-GQ222T (90NB0F22-M02720) × | 
ASUS K540UA-Q31B-CB (K540UA-Q31B-CB) × |
| General | | |
| Model | ASUS VivoBook X542UA-GQ222T | ASUS K540UA-Q31B-CB |
| Product code | 90NB0F22-M02720 | K540UA-Q31B-CB |
| Design | | |
| Product colour | - | Black, Chocolate |
| Form factor | Clamshell | Clamshell |
| Brand | ASUS | ASUS |
| Family | VivoBook | - |
| Model name | X542UA-GQ222T | K540UA-Q31B-CB |
| Part number | 90NB0F22-M02720 | K540UA-Q31B-CB |
| Release year (year) | 2017 | 2019 |
| Processor | | |
| Processor manufacturer | - | Intel |
| Processor family | Intel Pentium | 8th gen Intel Core i3 |
| Processor frequency (GHz) | 2.1 | 2.2 |
| Processor boost frequency (GHz) | - | 3.4 |
| Processor model | 4405U | i3-8130U |
| Processor cores | 2 | 2 |
| Processor threads | 4 | 4 |
| Processor lithography (Nm) | 14 | 14 |
| Processor socket | LGA 1356 (Socket B2) | - |
| Processor cache (MB) | 2 | 4 |
| Memory | | |
| Internal memory type | DDR4-SDRAM | DDR4-SDRAM |
| Maximum internal memory (GB) | 16 | 12 |
| Memory clock speed (MHz) | 2,133 | 2,133 |
| Internal memory (GB) | 8 | 6 |
| Display | | |
| Display diagonal (inch) | 15.6 | 15.6 |
| HD type | HD | Full HD |
| LED backlight | + | + |
| Touchscreen | - | - |
| Dual-screen | - | - |
| Display resolution | 1366 x 768 pixels | 1920 x 1080 pixels |
| Graphics | | |
| On-board graphics adapter | + | + |
| Discrete graphics adapter | - | - |
| On-board graphics adapter base frequency (MHz) | 300 | 300 |
| Maximum on-board graphics adapter memory (GB) | 74 | 32 |
| On-board graphics adapter model | Intel HD Graphics 510 | Intel UHD Graphics 620 |
| Storage | | |
| Total storage capacity (GB) | 1,000 | 1,000 |
| Card reader integrated | + | + |
| Storage media | HDD | Hybrid-HDD |
| Optical drive | + | - |
| Networking | | |
| Wi-Fi standards | - ieee 802.11a
- ieee 802.11ac
- ieee 802.11b
- ieee 802.11g
- ieee 802.11n
| - 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 | + | + |
| 4g | - | - |
| 3g | - | - |
| Bluetooth version | 4.0 | 4.0 |
| Ports and interfaces | | |
| USB 3.x Type-A ports | 2 | 1 |
| USB 3.x Type-C ports | 1 | - |
| Combo headphone/mic port | + | + |
| USB 2.0 ports | 1 | 2 |
| HDMI ports quantity | 1 | 1 |
| Ethernet LAN (RJ-45) ports | 1 | - |
| Audio | | |
| Speaker power (W) | 1.5 | - |
| Built-in microphone | + | + |
| Camera | | |
| Front camera | + | + |
| Keyboard | | |
| Numeric keypad | + | + |
| Full-size keyboard | - | + |
| Pointing device | Touchpad | Touchpad |
| Software | | |
| Operating system installed | Windows 10 Home | Windows 10 |
| Battery | | |
| Battery capacity (watt-hours) (Wh) | 38 | 33 |
| Weight and dimensions | | |
| Weight (kg) | 2.15 | 1.9 |
| Height (mm) | 23.2 | 27.2 |
| Depth (mm) | 251 | 251 |
| Width (mm) | 380 | 381 |
| Power | | |
| AC adapter power (W) | 45 | 45 |