| Attribute |
ASUS K555UB-XO099T (K555UB-XO099T) × | 
ASUS VivoBook X540LJ-XX548 (X540LJ-XX548) × |
| General | | |
| Model | ASUS K555UB-XO099T | ASUS VivoBook X540LJ-XX548 |
| Product code | K555UB-XO099T | X540LJ-XX548 |
| Design | | |
| Form factor | Clamshell | Clamshell |
| Brand | ASUS | ASUS |
| Family | - | VivoBook |
| Model name | K555UB-XO099T | X540LJ-XX548 |
| Part number | K555UB-XO099T | X540LJ-XX548 |
| Release year (year) | 2017 | 2017 |
| Processor | | |
| Processor family | 6th gen Intel Core i5 | 5th gen Intel Core i3 |
| Processor frequency (GHz) | 2.3 | 2 |
| Processor boost frequency (GHz) | 2.8 | - |
| Processor model | i5-6200U | i3-5005U |
| Processor cores | 2 | 2 |
| Processor threads | 4 | 4 |
| Processor lithography (Nm) | 14 | 14 |
| Processor socket | LGA 1356 (Socket B2) | BGA 1168 |
| Processor cache (MB) | 3 | 3 |
| Memory | | |
| Internal memory type | DDR3L-SDRAM | DDR3L-SDRAM |
| Maximum internal memory (GB) | 12 | 8 |
| Memory clock speed (MHz) | 1,600 | 1,600 |
| Internal memory (GB) | 4 | 4 |
| Display | | |
| Display diagonal (inch) | 15.6 | 15.6 |
| HD type | HD | HD |
| LED backlight | + | + |
| Touchscreen | - | - |
| Display resolution | 1366 x 768 pixels | 1366 x 768 pixels |
| Graphics | | |
| On-board graphics adapter | + | + |
| Discrete graphics adapter model | NVIDIA GeForce 940M | NVIDIA GeForce 920M |
| Discrete graphics memory type | - | GDDR3 |
| Discrete graphics adapter | + | + |
| On-board graphics adapter base frequency (MHz) | 300 | 300 |
| Maximum on-board graphics adapter memory (GB) | 74 | 16 |
| On-board graphics adapter model | Intel HD Graphics 520 | Intel HD Graphics 5500 |
| Storage | | |
| Total storage capacity (GB) | 1,000 | 1,000 |
| Card reader integrated | + | + |
| Storage media | HDD | HDD |
| Networking | | |
| Wi-Fi standards | - ieee 802.11b
- ieee 802.11g
- ieee 802.11n
| - ieee 802.11b
- ieee 802.11g
- ieee 802.11n
|
| Ethernet LAN | + | + |
| Ethernet LAN data rates (Mbit/s) | | |
| Wi-Fi | + | + |
| 4g | - | - |
| 3g | - | - |
| 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 | 1 |
| HDMI ports quantity | 1 | 1 |
| Ethernet LAN (RJ-45) ports | 1 | 1 |
| Audio | | |
| Built-in microphone | + | + |
| Camera | | |
| Front camera | + | + |
| Keyboard | | |
| Numeric keypad | + | + |
| Pointing device | Touchpad | Touchpad |
| Software | | |
| Operating system installed | Windows 10 Home | N |
| Battery | | |
| Battery capacity (watt-hours) (Wh) | 37 | 33 |
| Weight and dimensions | | |
| Weight (kg) | 2.3 | 1.9 |
| Height (mm) | 25.8 | 27.2 |
| Depth (mm) | 256 | 251.5 |
| Width (mm) | 382 | 381.4 |
| Power | | |
| AC adapter power (W) | 65 | 45 |
| Security | | |
| Cable lock slot | + | - |