WIFI: Dual-band 802.11ac wireless LAN (2.4GHz and 5GHz ) and Bluetooth 4.2
Ethernet: Gigabit Ethernet over USB 2.0 (max 300 Mbps). Power-over-Ethernet support (with separate PoE HAT). Improved PXE network and USB mass-storage booting.
Thermal management: Yes
Video: Yes – VideoCore IV 3D. Full-size HDMI
Audio: Yes
USB2.0: 4 ports
GPIO: 40-pin
Power: 5V/2.5A DC power input
Operating system support: Linux and Unix
Camera interface (CSI), Display interface (DSI), Micro SD card slot (now push-pull rather than push-push), Video Core IV 3D graphics core
Key Improvements from RPi 3 Model B to RPi 3 Model B+
Improved compatibility for network booting
New support for Power over Ethernet
Processor speed has increased from 1.2Ghz on Pi 3 to 1.4Ghz
New dual-band wireless LAN chip, 2.4Ghz and 5Ghz with embedded antenna