Sealevel Announces Rugged SuperSpeed 4-Port USB 3.1 Hub

November 16, 2021

Sealevel Systems, Inc., an industry leader for industrial I/O and computing, introduces the Rugged SuperSpeed 4-Port USB 3.1 Hub. The USB 3.1 hub achieves SuperSpeed operation while meeting the requirements to supply 1500mA per port simultaneously, and in extreme environments. The hub features a rugged, industrial housing, expansive ESD protections and an industry-leading -40°C to +85°C operating temperature.

Meeting Industry-Wide Demand
While the USB hub market continues to grow, hubs that maintain reliable operation when subjected to thermal challenges are scarce. Combine that with the potential for shock and vibration, and the Rugged SuperSpeed USB 3.1 Hubs from Sealevel emerge as the only viable option.

In the path of the summer release of Sealevel’s 7-port USB 3.1 hub, Sealevel responded to customer requests for an even smaller footprint and reduced port count. Capitalizing on Sealevel’s in-house experience with SWaP optimization, the 4-port hub maintains the robust capabilities of the 7-port version while meeting customer needs.

  • USB 3.1 compliant, providing up to 5 Gb/s data rate to the host
  • -40°C to +85°C operating temperature
  • Individual port power management
  • Up to 1500mA available on all ports simultaneously
  • Comprehensive input power protections (reverse polarity, voltage, surge, overcurrent, under-voltage, over-voltage)
  • Includes 2-meter USB 3.0 type A to USB 3.0 type B device cable (Item #CA783)
  • Wide operating voltage range (9V-30V)

USB 3.1 Compliant & Backwards Compatible with Legacy Equipment
The four-port USB hub supports the full bandwidth of USB 3.1, allowing connection of legacy peripherals alongside newer devices without disruption. The hub is backward compatible with USB 2.0, 1.1 and 1.0 devices.

The HUB4SS-BA ships with port 4 configured as a Charging Downstream Port (CDP) capable of supplying up to 2.4A of current to a connected device. The remaining three CDPs supply up to 1500 mA to each connected device.

The USB 3.1 hub is fully compatible with standard USB cables but includes SeaLATCH USB type B connectors. When used with optional SeaLATCH USB cables, a high-retention thumbscrew prevents accidental cable disconnection which makes it ideal for high shock and vibration applications.


  • Self-powered USB 3.1 hub provides four Charging Downstream USB Ports (CDPs)
  • One CDP supplies up to 2.4A to a connected device
  • Remaining CDPs supply up to 1500mA to each connected device
  • Device offers SDP charging when powered by external USB (up to 500mA for USB 2.0/1.1/1.0 connections or up to 900mA for USB 3.0/3.1 connections)
  • Supports SuperSpeed (5Gb/s), high-speed (480Mb/s), full-speed (12Mb/s) and low-speed (1.5Mb/s) operation
  •  ESD protection
    • ±8kV on Each USB 2.0 Data Line (D+, D-)
    • ±15kV on Each USB 3.0 Data Line (SSTX+, SSTX-, SSRX+, SSRX-)
  • Optional wall-mount AC power supply accessory that outputs 24VDC @ 2.71A (Item #TR152)

The four-port Rugged SuperSpeed USB 3.1 Hub (Item #HUB4SS-BA) is available from stock for $367. For more information about the USB 3.1 hub, including OEM options, call +1 864.843.4343.


Sealevel’s USB 3.1 Hubs Recognized for Exceptional Performance
Sealevel’s Rugged SuperSpeed 7-Port USB 3.1 Hub is a finalist in the Control Engineering 2022 Engineers’ Choice Awards.  To learn more and to vote, click here.