| Attribute |
ASUS ZenBook UX561UD-E2051T (90NB0G21-M00790) × | 
ASUS ZenBook UX561UN (90NB0G31-M00570) × |
| General | | |
| Model | ASUS ZenBook UX561UD-E2051T | ASUS ZenBook UX561UN |
| Product code | 90NB0G21-M00790 | 90NB0G31-M00570 |
| Design | | |
| Product colour | Grey | Grey |
| Form factor | Convertible (Detachable) | Convertible (Folder) |
| Brand | ASUS | ASUS |
| Family | ZenBook | ZenBook |
| Series | Flip | Flip 15 |
| Model name | UX561UD-E2051T | UX561UN |
| Part number | 90NB0G21-M00790 | 90NB0G31-M00570 |
| Release year (year) | 2018 | 2018 |
| 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 | 4 |
| Processor model | i7-8550U | i7-8550U |
| Processor cores | 4 | 4 |
| Processor threads | 8 | 8 |
| Processor lithography (Nm) | 14 | 14 |
| Processor socket | BGA 1356 | BGA 1356 |
| Processor cache (MB) | 8 | 8 |
| Memory | | |
| Internal memory type | DDR4-SDRAM | DDR4-SDRAM |
| Maximum internal memory (GB) | 16 | - |
| Memory clock speed (MHz) | 2,400 | 2,400 |
| Internal memory (GB) | 16 | 8 |
| Display | | |
| Display diagonal (inch) | 15.6 | 15.6 |
| HD type | 4K Ultra HD | - |
| LED backlight | + | + |
| Touchscreen | + | + |
| Display resolution | 3840 x 2160 pixels | 1920 x 1080 pixels |
| Graphics | | |
| On-board graphics adapter | + | + |
| Discrete graphics adapter model | NVIDIA GeForce GTX 1050 | NVIDIA GeForce MX150 |
| Discrete graphics memory type | GDDR5 | GDDR5 |
| Discrete graphics adapter | + | + |
| Discrete graphics adapter memory (GB) | 2 | 2 |
| On-board graphics adapter base frequency (MHz) | 300 | 300 |
| Maximum on-board graphics adapter memory (GB) | 32 | 32 |
| 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 | - |
| Card reader integrated | + | + |
| Storage media | SSD | SSD |
| Optical drive | - | - |
| Networking | | |
| Wi-Fi standards | | |
| Ethernet LAN | - | - |
| Wi-Fi | + | + |
| 4g | - | - |
| 3g | - | - |
| Ports and interfaces | | |
| USB 3.x Type-A ports | 2 | 2 |
| USB 3.x Type-C ports | - | 1 |
| Combo headphone/mic port | + | + |
| DVI port | - | - |
| HDMI ports quantity | 1 | 1 |
| Audio | | |
| Built-in microphone | + | - |
| Camera | | |
| Front camera | + | + |
| Keyboard | | |
| Numeric keypad | + | + |
| Pointing device | Touchpad | Touchpad |
| Software | | |
| Operating system installed | Windows 10 Home | Windows 10 Home |
| Battery | | |
| Battery capacity (watt-hours) (Wh) | 52 | 52 |
| Weight and dimensions | | |
| Weight (kg) | 2.1 | 1.9 |
| Height (mm) | 21 | 19.2 |
| Depth (mm) | 246 | 246 |
| Width (mm) | 364 | 364 |
| Power | | |
| AC adapter power (W) | 120 | 65 |
| Security | | |
| Trusted platform module (TPM) | + | - |