New Raspberry Pi 4's have dedicated gigabit ethernet, two USB 3 ports, and up to 4GB of RAM. Read/write SSD speeds benchmarked over 320MB/s respectively. Gigabit ethernet reached 943Mbps. Impressive for networking
Amazon.com: Geekworm for Raspberry Pi Zero 2 W Case Heatsink, M200-K Gigabit Ethernet Expansion Board 3-Port USB HUB with Aluminum Alloy Case&Heatsink for Raspberry Pi Zero 2W/Zero W (Not inlcude Raspberry Pi) :
Raspberry Pi 4 Just Released: Faster CPU, More Memory, Dual HDMI Ports | Hackaday
Interfacing hardware with the Raspberry Pi
Amazon.com: RasTech Raspberry Pi 3 Model B Starter Kit with 32GB Micro SD Card HDMI Cable Network Cable 5V 3A Power Supply with ON/Off Case Cooling Fan, 3 Heatsinks Card Reader Screwdriver :