Raspberry Pi 4 Model B available for 2GB /4GB /8GB
Amazon.com: seeed Studio Raspberry Pi 4 Model B [4GB] RAM, Single Board Computer Suitable for Building Mini PC/Smart Robot/Game Console/Workstation/Media Center/Etc. : Electronics
Raspberry Pi 4 2GB Ram 1.5Ghz CPU with 2 HDMI port / Pi 4B with Wifi & Bluetooth | eBay
Zero4U - 4 Port USB Hub for Raspberry Pi Zero v1.3 : ID 3298 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
4 Port USB HUB HAT for Raspberry Pi Zero
Raspberry Pi 4 Model B/1GB - PiShop.us
Raspberry Pi 4 Model B (4GB) - no quantity restrictions – Rokland
Raspberry Pi 4 Just Released: Faster CPU, More Memory, Dual HDMI Ports | Hackaday
Raspberry Pi 4 1.5Ghz CPU+2 HDMI port /Raspberry Pi 4B w/ Wifi+Bluetooth/mini PC | eBay
MEGA4: 4-PORT USB 3.1 PPPS HUB FOR RASPBERRY PI 4B - AliExpress
Raspberry Pi 4 Model B specifications – Raspberry Pi
LABISTS Raspberry Pi 4 8GB RAM Starter Kit with 64GB Micro SD Card
Raspberry Pi 4 Model B - 2Gb - OKdo
MEGA4: 4-Port USB 3.1 PPPS Hub for Raspberry Pi 4B | UUGear
Amazon.com: 4-Port Raspberry Pi USB HUB HAT for Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero/Zero W, 4 USB Ports Compatible with USB2.0/1.1 Onboard USB to UART Onboard Multi Indicators : Electronics