Hardware

H2+ J4115

H2 J4015

Form Factor 110mm x 110mm x 47mm Approx.
Processor Intel Celeron J4105(REV-B+(H2+): J4115) Processor (14nm, Quad-Core, TDP 10W)
2.5Ghz(Single Thread) or 2.3Ghz(Multi Thread)
4MB L2 Cache
UHD Graphics 600 (Gen 9.5, GT1, up to 700MHz)
Fan-less design
Memory 2 x DDR4 1.2V SO-DIMM slots
Dual Channel, up to 2400 MT/s (DDR4-PC19200)
Max memory capacity 32GB
DDR3 is not supported
Storage 1 x eMMC connector (bootable and selectable on BIOS)
Various eMMC modules can be purchased at Hardkernel store
2 x SATA3 6Gbps
1 x M.2 slot (PCIe 2.0 x 4, supports NGFF-2280 cards)
M.2 SATA SSD is not supported
Networking 2 x GbE LAN ports (RJ45, supports 10/100/1000 Mbps) (REV-B+ supports 2.5GbE Lan Ports(RJ45, supports 10/100/1000/2500 Mbps))
Realtek RTL8111G (REV-B+ RTL8125B)
Supports Wake-On-Lan
LED indicators (Green: Link, Amber: Traffic)
Video 1 x DisplayPort 1.2 (up to 4K@60Hz)
1 x HDMI 2.0 (up to 4K@60Hz)
Dual simultaneous display support
Audio 1 x Audio out (3.5mm jack)
1 x Audio in (3.5mm jack)
1 x SPDIF out (ALC662, HDA codec)
* HDMI & DP have audio output too.
External I/O 2 x USB 3.0 Host ports
2 x USB 2.0 Host ports
1 x Peripheral Expansion Header (20-pin, 2.54mm pitch)(REV-B+ has added HDMI-CEC, 5VA+, D+, D- to become a 24-pin.)
– 1 x DC 5V, 1 x DC 3.3V, 5 x GND
– 2 x UART (TXD/RXD/RTS/CTS)
– 2 x I2C (SCL/SDA)
– 1 x External Power Button
– All 3.3V I/O signal level
Other features Passive Heatsink
BIOS Backup Battery
– Maintains system time and BIOS settings
Power Button
Reset Button
System LEDS Indicators:
– Red (PWR) - Solid light when DC power is supplied
– Blue (left, ALIVE) - System is running
– Blue (right, RESET) - When the RESET button is pressed, it turns off shortly
– Amber (SATA) - Flashes when there is data transfer
– Green (NVMe) - Flashes when there is data transfer
Active Cooling Fan Connector (5V 4-pin, PWM input + TACHO output)
– Active Cooling Fan is optional
– Connector (4-pin, 1.25mm pitch)
Power DC jack : outer (negative) diameter 5.5mm, inner(positive) diameter 2.1mm
DC 14V ~ 20V (up to 60W)
– DC 15V/4A power adapter is recommended
Power consumption:
– IDLE : ≃4W
– CPU Stress : ≃14W
– CPU+GPU Stress : ≃22W
– Power-off : ≃0.5W
– Suspend : ≃0.6W

Note that you have to connect an HDMI-CEC adapter board to the 24-pin header to use the HDMI CEC function. The HDMI-CEC board will be sold separately.

Dual 4K/60Hz display output is fantastic with HDMI 2.0 and DP 1.2 ports.
HW accelerated WebGL example runs on 7680×2106(pseudo 8K?) resolution.

H2+

Revision B+ board(H2+)

  • A. CPU (Intel Celeron J4115 Processor)
  • B. 2 x DDR4 SO-DIMM slots (Dual channel memory support)
  • C. 1 x M.2 PCI Express Module Socket (NGFF-2280)
  • D. 1 x eMMC (Embedded Multimedia-Card) Socket
  • E. 2 x SATA Power Connectors (2.5mm pitch, JST-XH compatible connector)
  • F. 2 x SATA3 6.0 Gb/s Data Connectors
  • G. 1 x DC Power Jack
  • H. 2 x USB 3.0
  • I. 2 x USB 2.0
  • J. 1 x HDMI 2.0
  • K. 1 x DisplayPort 1.2
  • L. 2 x RJ45 Ethernet Ports (10/100/1000/2500)
  • M. 5 x System LED Indicators
  • N. 1 x Peripheral Expansion Header (24-pin)
  • O. 1 x Power Switch
  • P. 1 x Reset Switch
  • Q. 1 x Backup Battery Connector (2-pin)
  • R. 1 x Active Cooling Fan Connector (4-pin)
  • S. 1 x Audio out, 1 x Audio in, 1 x SPDIF out

H2

Previous boards of revision B(H2)

  • A. CPU (Intel Celeron J4105 Processor)
  • B. 2 x DDR4 SO-DIMM slots (Dual channel memory support)
  • C. 1 x M.2 PCI Express Module Socket (NGFF-2280)
  • D. 1 x eMMC (Embedded Multimedia-Card) Socket
  • E. 2 x SATA Power Connectors (2.5mm pitch, JST-XH compatible connector)
  • F. 2 x SATA3 6.0 Gb/s Data Connectors
  • G. 1 x DC Power Jack
  • H. 2 x USB 3.0
  • I. 2 x USB 2.0
  • J. 1 x HDMI 2.0
  • K. 1 x DisplayPort 1.2
  • L. 2 x RJ45 Ethernet Ports (10/100/1000)
  • M. 5 x System LED Indicators
  • N. 1 x Peripheral Expansion Header (20-pin)
  • O. 1 x Power Switch
  • P. 1 x Reset Switch
  • Q. 1 x Backup Battery Connector (2-pin)
  • R. 1 x Active Cooling Fan Connector (4-pin)
  • S. 1 x Audio out, 1 x Audio in, 1 x SPDIF out

Board dimensions

  • Top side

|TOP

  • Rear side

|REAR

# DATE Release number Description
1 2018/10/01 Rev 0.1 Initial release.
2 2019/05/30 Rev B - CLK-REQ signal pull resistor is added to support a PCIe-to-SATA bridge board
- 12V SATA power source improvement for high power HDDs.
- Add a M.2 screw for NVMe storage installation
- Preinstalled the latest BIOS 1.05.
3 2019/12/15 Rev B+(H2+) - The Peripheral Expansion Header became 20pin to 24 pin by adding HMDI-CEC, 5VA+, D+, D-
CEC not verfied.
- Change 1G to 2.5G LAN
- Fix SATA 12V run power management bug