| Model | – LI21-H420E – LI21-H420E2 (Onboard TPM2.0)
 | 
| Form Factor | – Thin Mini-ITX (170 * 170mm) | 
| Processor System | – Intel® LGA1200 Socket supports 10/11th Gen Core Processor, Max. 65W – Intel® Comet Lake-S H420E Chipset
 – AMI 256M Flash ROM
 | 
| Memory | – 2* DDR4 2933/2666MHz SO-DIMM up to 64GB | 
| Storage | – 1* M.2 M-key (2280, PCI-Ex4 interface, support NVMe SSD) – 1* SATAIII
 | 
| Expansion | – 1* M.2 E-key (2230, CNVi/PCI-Ex1/USB2.0, support WIFI/BT) – 1* M.2 B-key (3042/3052, USB3.2/USB2.0, support 3G/4G/5G Module)
 – 1* PCI-E x16 slot (Maximum power supply 75W)
 | 
| Ethernet | – 1* Intel® i226-V 2.5GbE – 1* Intel® i219-LM GbE
 | 
| Graphics | – Intel® HD Graphics, shared Memory – 2* HDMI 1.4 (Max Resolution : 4096×2160@30Hz, HDMI1 Co-lay VGA)
 – 1* DP1.4 (Max Resolution : 5120×3200@60Hz)
 – 1* LVDS/eDP (Max Resolution : LVDS: 2560×1600@60Hz)
 – Support Dual Displays
 | 
| Audio | – HD audio: Realtek ALC888S | 
| Watchdog Timer | – From Super I/O to drag RESETCON# – 256 segments (10sec ~ 255min)
 | 
| Internal I/O | – 4* USB2.0 – 2* RS232/422/485(COM1/2 Support 5V/12V TTL)
 – 4* RS232 (COM3/4 Support 5/12V TTL)
 – 1* SATAIII (6.0Gb/s)
 – 1* LVDS/eDP (Choose one from two)
 – 1* Inverter (PH2.0)
 – 1* M.2 M-key (2280, PCI-Ex4 interface, Support NVMe)
 – 1* M.2 E-key (2230, CNVi/PCI-Ex1/USB2.0 interface)
 – 1* M.2 B-key (3042/3052, USB3.2/USB2.0 interface)
 – 1* PCI-Ex16 slot (by CPU)
 – 1* GPIO (8 bit,5V)
 – 1* CPU FAN (W/ Smart FAN)
 – 2* System FAN (W/O Smart FAN)
 – 1* 4pin DC Connector
 – 1* 3pin Speaker (3W Amplifier)
 – 1* Chassis intrusion
 – 1* SMBUS/ I2C
 – 1* AT mode
 | 
| External I/O | – 4* USB3.2 (Gen1) – 2* HDMI1.4 (HMDI1 Co-lay VGA)
 – 1* DP1.4
 – 2* RJ45
 – 1* Audio Jack (Line-out + MIC)
 – 1* DC Jack
 | 
| Power | 12-28V DC-in – AT: Directly PWR on as Power input ready
 – ATX: Press Button to PWR on after Power input ready
 | 
| Compliance | – CE, FCC, RoHS, REACH compatible | 
| Temperature | – Operating Temperature: 0 ~ 60° C (with 0.7m/s air flow) – Storage Temperature: -20 ~ 70° C
 – Humidity: 10% ~ 90% RH @40°C (non-condensing)
 | 
| OS Support | – Windows 10, Windows 11, Linux |