| Attribute |
Acer TravelMate B1 TMB114-21-478M (NX.VK4EH.001) × | 
Acer Chromebook R721T-4058 + Earphone 300 (NX.HBREF.001+NP.HDS1A.005) × |
| General | | |
| Model | Acer TravelMate B1 TMB114-21-478M | Acer Chromebook R721T-4058 + Earphone 300 |
| Product code | NX.VK4EH.001 | NX.HBREF.001+NP.HDS1A.005 |
| Design | | |
| Product colour | Black | Black |
| Form factor | Clamshell | Convertible (Folder) |
| Brand | Acer | Acer |
| Family | TravelMate | Chromebook |
| Series | - | Spin 311 |
| Model name | B1 TMB114-21-478M | R721T-4058 + Earphone 300 |
| Part number | NX.VK4EH.001 | NX.HBREF.001+NP.HDS1A.005 |
| Release year (year) | 2019 | 2020 |
| Processor | | |
| Processor manufacturer | - | AMD |
| Processor family | 7th Generation AMD A4-Series APUs | AMD A4 |
| Processor frequency (GHz) | 1.6 | 1.6 |
| Processor boost frequency (GHz) | 2.4 | 2.4 |
| Processor model | A4-9120C | A4-9120C |
| Processor cores | 2 | 2 |
| Processor threads | 2 | - |
| Processor cache (MB) | 1 | 1 |
| Memory | | |
| Internal memory type | DDR4-SDRAM | DDR4-SDRAM |
| Maximum internal memory (GB) | 4 | - |
| Internal memory (GB) | 4 | 4 |
| Display | | |
| Display diagonal (inch) | 14 | 11.6 |
| 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 | - | - |
| On-board graphics adapter model | AMD Radeon R4 | AMD Radeon R4 |
| Storage | | |
| Total storage capacity (GB) | 64 | 32 |
| Card reader integrated | + | + |
| Storage media | eMMC | Flash |
| Optical drive | - | - |
| Networking | | |
| Wi-Fi standards | - 802.11b
- 802.11g
- wi-fi 4 (802.11n)
- wi-fi 5 (802.11ac)
| - 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 | 4.2 | 4.1 |
| Ports and interfaces | | |
| USB 3.x Type-A ports | 1 | - |
| Combo headphone/mic port | + | + |
| USB 2.0 ports | 2 | - |
| HDMI ports quantity | 1 | - |
| Ethernet LAN (RJ-45) ports | 1 | - |
| Audio | | |
| Built-in microphone | + | - |
| Camera | | |
| Front camera | + | + |
| Front camera HD type | HD | HD |
| Front camera resolution (pixels) | - | 1280 x 720 |
| Keyboard | | |
| Numeric keypad | - | - |
| Pointing device | Touchpad | Touchpad |
| Software | | |
| Operating system installed | Windows 10 Pro | Chrome OS |
| Operating system architecture (bit) | 64 | - |
| Battery | | |
| Battery capacity (watt-hours) (Wh) | - | 48 |
| Battery capacity (mAh) | 4,319 | 4,200 |
| Battery life (max) (h) | - | 10 |
| Weight and dimensions | | |
| Weight (kg) | 1.68 | 1.5 |
| Height (mm) | 19.9 | 23.5 |
| Depth (mm) | 253 | 206 |
| Width (mm) | 350 | 296 |
| Power | | |
| AC adapter power (W) | 45 | 45 |
| Security | | |
| Cable lock slot | + | - |
| Fingerprint reader | - | - |
| Trusted platform module (TPM) | + | + |