Rockchip RK3399
LPDDR3 2GB/4GB (Optional)
eMMC 16GB and Micro-SD Card Slot
HDMI (2.0) Port x 1
WiFi 802.11 b/g/n, BT V4.2
GbE: RJ45 x 1
USB 3.2 Gen 1: Type C OTG x 1, Type A x 1
USB 2.0: Type A x 1
RS-232/422/485 x 1, RS-232 x 1 (Optional)
mPCIe Slot x 1
+12V DC Input
OS Support: Android 8.1
Compact Size (W x D x H): 103.4 mm x 96 mm x 50 mm

Rockchip RK3288
DDR3L 2GB/4GB (Optional)
eMMC 16GB and Micro-SD Card Slot
HDMI (1.4) Port x 1
WiFi 802.11 b/g/n, BT V4.2
GbE: RJ45 x 1
USB 2.0: Micro-USB OTG x 1, Type A x 2
RS-232/422/485 x 1, RS-232 x 1 (Optional)
mPCIe Slot x 1
+12V DC Input
OS Support: Android 9.0
Compact Size (W x D x H): 103.4 mm x 96 mm x 50 mm

Rockchip RK3399 SoC
Onboard LPDDR3 Memory 2GB
Onboard eMMC 16GB
MicroSD Slot
Gigabit Ethernet x 1
eDP and HDMI
RS-232 x 1, RS-232/422/485
USB 2.0 x 1, USB 3.0 x 1, Type C x 1

Rockchip RK3288 ARM Cortex™-A17 Quad-core 1.6 GHz
Onboard DDR3L Memory 2 GB
Onboard eMMC 16 GB
MicroSD Slot up to 64 GB
Gigabit Ethernet x 1
18/24-bit Dual-Channel LVDS, eDP and HDMI
RS-232 x 1, RS-232/422/485 x 1
USB 2.0 x 3, USB OTG x 1, Mini-PCIe x 1 (for 3G/4G Module)
Optional 7.4V Battery Power Input
Optional High Accuracy GPS Module, NFC Module