Raspberry Pi 4 X825 2.5 inch SATA HDD/SSD Storage Expansion Board, X825 USB3.1 Mobile Hard Disk Module for Raspberry Pi 4B - AliExpress

Compatible for Raspberry Pi Dual mSATA HDD/SSD Storage Expansion Board X852 USB 3.0 Mobile Hard Disk Module - AliExpress

Geekworm X885 Dual 3.5 SATA HDD Shield for Raspberry Pi 4 Model B 8GB / 4GB / 2GB

Raspberry Pi X851 M.2 NGFF 2280 SATA SSD NAS Storage Expansion Board for Raspberry Pi

X882 V2.0 Dual 2.5 SATA HDD/SSD Storage Expansion Board with Safe shutdown, Auto On function for Raspberry Pi 4B - AliExpress

Geekworm NASPi 2.5 inch SATA HDD/SSD NAS Case Storage Kit for Raspberry Pi 4 (Support Max. 9.8mm Thickness HDD/SSD)

Raspberry Pi X832 V1.0 3.5 SATA HDD Storage Expansion Board with USB 3.1 Jumper for Raspberry Pi 4 Model B Only

Raspberry Pi 4 Case Ssd Slot Raspberry Pi 4 Case Sata - Raspberry Pi 4 Model B 2.5 - Aliexpress

Dual 3.5 SATA HDD Shield X885 V1.1 Storage Expansion Board with Safe shutdown, Auto On , RAID function for Raspberry Pi 4B - AliExpress

Note: , This is the new X825 V2.0 version which release at April 1st 2020, there will be a new case X825-C8 designed for X825 V2.0. The X825-C6 or

For Raspberry Pi 4, X825 V2.0 2.5 inch SATA HDD/SSD Expansion Board