1. OP1 64bit six-core processor: dual-core -A72 (up to 2.0Ghz) plus quad-core -A53 (up to 1.5Ghz) Harvard Superscalar processor core; GPU: Mali T860MP4 GPU, support OpenGL ES 1.1 /2.0 /3.0 / 3.1/3.2, Vulkan 1.0, Open 1.1 1.2, DX11.2. Memory LPDDR4: 64bit dual channel LPDDR4@3200Mb/s, 4GB; SPI Flash: Solder 4MB SPI Flash - support NVMe boot from SPI; Wifi/BT Antenna: Wifi/BT with external antenna supported. The uFL connector must be soldered on the board, which will disable the onboard antenna.3. Onboard eMMC module: industrial-grade high-performance eMMC storage; -SD card: uSD slot supports up to 128G uSD card; M.2 SSD: M.2 connector supports up to 2T M .2 NVME SSDs. Note: M.2 expansion board and heatsink recommended for proper installation on Rock 4 "+"; Display -Compatible: -Compatible 2.0 up to 4k@604. Peripheral: MIPI 2 channel, via FPC connector. -compatible and MIPI can work at the same time, supporting mirror mode or extended mode. Audio 3.5mm with microphone with improved mechanics. Supports HD codecs up to 24-bit/96kHz audio; Camera MIPI CSI: MIPI CSI 2 lanes via FPC connector, supports up to 8MP cameras5. USB 3.0 OTG x1: /Device toggle hardware switch, previous; USB 3.0 x1: dedicated USB3.0 channel, ; USB 2.0 x2; Ethernet GbE: network. Wireless 802.11 ac wifi 2,4/5GHz. Bluetooth 5.0; LAN: GbE LAN with PoE over PoE requires additional HAT: RK3399Version: B version (with WIFI and Bluetooth onboard)Memory capacity:4G+64GProcessor Brand: RockchipIntegrated features: WiFi 802.11b/gIntegrated Features: BluetoothInterface: 4 x USBInterface: USB OTGCPU: RK3399GPU: Mali T864Wifi/BT: 802.11 ac wifi bluetooth 5.0 with onboard antennaOperating system: Android7.0, Debian, Colour:eenMaterial:PCB+MetalSize:85 x 54mmPackage Contents:1 x for Rock 4 B+plus B development boardOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.