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For Raspberry Pi 3B+/3B, X821 V1.2 2.5 inch SATA SSD/HDD Storage Expansion Board

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  • Description
  • Manual
  • Shipping Policy
  • Product Reviews

Note: the Raspberry Pi 4, HDD/SSD, Power Adapter is not included in the packing list.

X821 is a simplified upgrade version of X820, it provides a complete storage solution for Raspberry Pi 3B+/3B with 2.5 inch SATA interface HDD/SDD hard disk.
X821 is a ideal storage solution for building home media center and Network-attached storage (NAS) for storing and streaming your own videos, music, and digital photos around the house and even across the world.

User Manual:


  • Supports 2.5-inch SATA hard disk drives (HDD) / solid-state drive (SSD)
  • Ideal storage solution for Raspberry Pi 3 B+ / 3B
  • UASP supported for Raspberry Pi 3
  • USB 3.1 Gen1 to SATA 6Gb/s Bridge Controller
  • LED blue indicator indicates drive status
  • On-board 2 pogo pins to achieve powered between X821 and Pi 3B+/3B without additional cable
  • Allows booting OS from your HDD/SSD for faster app opens, web serving and file copying
  • Fully compatible with X735 for power management and cooling your Raspberry Pi 3B+/3B
  • PCB Size: 85x107mm/3.35x4.21inch

How to Power

  • 5Vdc +/-5% , ≥3A, power via USB-C port of X821; When use with X735 V3.0, please power via X735 DC 6-30V In / USB-C 5V In

Note: Please use high quality power supply or the SSD/HDD may not be identified or be damaged!!!

Matching Metal Case

Packing List

  • 1 x X821 V1.2 Expansion Board
  • 1 x USB connector
  • 2 x M3x6mm Screws
  • 8 x M2.5x5mm Screws
  • 4 x M2.5x14mm F/F Spacers 

Refer to:

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We send orders to worldwide with tracking number.

For detail refer to Shipping Policy

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