A Global Silicon Electronics, Inc. Company
4-Bay RAID USB 3.2 Gen 1/eSATA BUSlink External Desktop Hard Drive
WARNING for California resident
Available In Price Model
24TB $1,499.99 U3-24TB4S
32TB $1,799.99 U3-32TB4S
40TB $1,999.99 U3-40TB4S
48TB $2,299.99 U3-48TB4S
56TB $2,499.99 U3-56TB4S
64TB $2,799.99 U3-64TB4S
72TB $3,299.99 U3-72TB4S
80TB $3,499.99 U3-80TB4S
88TB $3999.99 U3-88TB4S

Product Description

This BUSlink 4-Bay RAID hard drive supports large capacity and a USB 3.2 Gen 1/eSATA interface. It supports Intelligent RAID function: RAID 0, RAID 3, RAID 5, RAID 10, and Large. Removable HDD trays support hot-plug replacement of drives (only for RAID with redundancy mode). HDD intelligent sleep function is supported. The LCM display and buttons support the convenient setting of RAID modes and status display. The optional password allows locking of RAID settings. The cooling fan maintains a safe operating temperature. Skidproof and shockproof rubber feet mat ensure safe operation. Using metal alloy case, heat is easily dissipated and with less plastic used, more recyclable and eco friendly too.


  • Up to 80TB in RAID 0 (4 x 20TB) capacity at present, can be larger when a larger capacity drive is available
  • 4 drives were included and installed in trays
  • Supports 5 RAID mode: RAID 0, RAID 3, RAID 5, RAID 10, and Large. Shipped from factory in RAID 0 striping supporting the largest capacity but no redundancy. Could be changed to other RAID modes to allow redundancy, but will see less capacity.
  • Removable 3.5” HDD tray supports the hot-plug replacement of drive (RAID mode with redundancy only)
  • Support HDD intelligent sleep function
  • Cooling fan maintain safe operating temperature
  • Skidproof and shockproof rubber feet mat ensure safe operation
  • Self-powered, AC adapter included
  • Transfer rate:
    • USB 2.0: Up to 480 Mbits/s
    • USB 3.2 Gen 1: Up to 5 Gbits/s
    • eSATA: Up to 6.0 Gbits/s
  • Drive: Pre-formatted NTFS SATA drive (usable in PC & Linux, need to reformat to use in Mac)
  • TAA compliant
  • Item dimension: 8.3″ x 5.5″ x 7″
  • Item weight: 12.4lb
  • Shipping dimension: 11.7″ x 10″ x 9″
  • Shipping weight: 16.5lb
  • ECCN: EAR99
  • HTS: 8471705065

System Requirement

  • eSATA port with AHCI mode to support hot-plug
  • USB 3.2 Gen 1 port to achieve 5Gbps transfer speed
  • Backward compatible to USB 2.0 Hi-Speed port with USB 2.0 transfer speed
  • Mac OS X 10.4 or later
  • Microsoft Windows 10, 8, 7, Vista, XP
  • Windows Server 2019, 2016, 2012, 2008, 2003. Does not work with 2000 Server
  • Linux
  • 2TB or smaller will support Windows XP; larger than 2TB requires GPT support and does not support Windows XP

Package Contents

  • BUSlink USB 3.2 Gen 1/eSATA 4-bay RAID external hard drive
  • USB 3.2 Gen 1 A to B cable
  • eSATA cable
  • 12V 4-6A DC Full range switching power adapter
  • User Manual