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Black four-bay SATA dock with dual fans, 3.4 by 6.7 by 11.4 inches

STARTECH

STARTECH SDOCK4U33 4-Bay USB 3.0 SATA Drive Enclosure

SKU CH-WEE7-3ABE5 MPN SDOCK4U33

A four-bay dock that lets you connect and hot-swap 2.5 or 3.5 inch SATA drives over USB 3.0 with UASP support

  • Drive interfaceSATA I/II/III
  • External connectionUSB 3.0 w/UASP & SATA III
  • Supported drivesDual HDD
  • Bay count4 Bay
  • Product colorBlack
  • Product typeOthers

Number of Bay 4 Bay

Size USB 3.0

  • Connect and swap four 2.5 / 3.5 in SATA drives through USB 3.0
  • Support SATA III 6 Gbps and UASP for optimal performance
  • Dual fans keep four drives cool during heavy workloads
  • Tool-free removable bays let you change drives in seconds
  • Works with Windows and macOS via standard USB 3.0 connection

Four-Bay USB 3.0 SATA Dock

The StarTech SDOCK4U33 is a black plastic enclosure that lets you connect up to four 2.5 or 3.5 inch SATA drives to a single USB 3.0 port. It uses a VL812 and ASM1053E chipset to provide SATA III 6 Gbps speeds with UASP support. Dual built-in fans keep the drives cool during extended use. The package includes the dock, a USB 3.0 cable, a universal power adapter and a manual.

Suited for multi-drive workflows.

This dock suits technicians, archivists and IT professionals who need simultaneous access to several SATA hard drives or SSDs for imaging, recovery or bulk data transfer. Hot-swap capability means drives can be inserted or removed without rebooting the host. Users who only ever work with one drive at a time, or who need a bus-powered solution for field use, should consider a simpler single-bay adapter instead.

USB 3.0 with UASP determines transfer ceiling

The external USB 3.0 interface combined with UASP protocol support is the specification that governs real-world throughput. It enables the full SATA III 6 Gbps potential of attached drives, reducing latency and CPU overhead compared with standard BOT transport. If the host system only provides USB 2.0 ports, performance will be limited to that slower standard regardless of the drive capabilities.

How it compares

Measured against everything we stock in External Drive Enclosures, at today’s prices. Recalculated every night.

Price $113.99
Pricier than about 82% of the 821 comparable items (median $30.99).

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Specifications

Product
Brand nameStarTech.com
Model nameSDOCK4U33
Product colorBlack
Product typeOthers
Storage
Drive interfaceSATA I/II/III
Supported drivesDual HDD
Bay count4 Bay
Ports & slots
External connectionUSB 3.0 w/UASP & SATA III
Size & build
Main materialPlastic
Product dimensionsHeight:3.4 in × Width:6.7 in × Depth:11.4 in
Product weight2.27 lb (1.03 kg)
Shipping weight2.20 kg
Package size343 × 216 × 173 mm
In the box
In the boxUSB 3.0 4-Bay 2.5/3.5 in SATA SSD/HDD Dock
1 x USB 3.0 Cable
1 x Universal Power Adapter
1 x Instruction Manual

Other versions of this model

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Questions about this item

What practical speed ceiling does the USB 3.0 connection with UASP impose on the four SATA III bays?

The USB 3.0 link runs at 5 Gbps, so total throughput across all four bays cannot exceed that bus limit even though each bay supports SATA III 6 Gbps.

What are the exact dimensions and weight I need to clear on my desk for the four-bay dock?

The unit measures 3.4 inches high by 6.7 inches wide by 11.4 inches deep and weighs 2.27 lb.

How do I install a drive and which step do people usually miss?

Slide a 2.5 or 3.5 inch SATA drive into any bay until the 7+15 pin combo connector seats firmly; the step most people miss is pressing the drive all the way home so both data and power pins engage.

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