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Diamond Point International

B&B Industrial Grade USB 2.0 Hubs

High Retention USB Connectors, Wide Operating Temperature, Optional Isolation


Our Industrial Grade USB Hubs are designed for the harshest environments. They are EMC tested to meet heavy industrial standards. The four port hubs are UL listed for Class 1 Division 2 hazardous locations. High retention USB connectors hold standard USB cables tight and are perfect for high vibration applications. The UHR304 and UHR307 offer 4 kV Isolation between the upstream and downstream USB ports to protect expensive equipment from dangerous ground loops and to help ensure data integrity. No doubt about it, these hubs will operate where standard office grade hubs fail – such as near variable frequency drives, motor control centers, welding, and other large electrical loads.


Isolation: 4 kV on models UHR204 and UHR304
Wide Operating Temperature: (-) 40 to (+) 80C
ESD Protection: 15 kV
Shock, Drop, and Vibration Tested
Rugged metal panel mount housing

When deciding between the isolated models and the non-isolated models, you should be aware that isolation technology available on the market today is limited to 12 Mbps. USB 2.0 devices operate at one of three speeds. Low speed devices, such as a keyboard or mouse, operate at 1.5 Mbps (USB 1.1). This is called “Low Speed.” Other devices, such as scanners or printers may operate at 12 Mbps (USB 1.1). This is called “Full Speed.” Devices such as USB video cameras may require 480 Mbps (USB 2.0). This is called “High Speed” USB. Our USB Hubs support 2.0 – However, the isolated hubs do not support “High Speed” 480 Mbps and will ratchet back to 12 Mbps.

The UHR204, our non-isolated four port hub, can operate on USB Bus Power. In this mode, it provides 100mA per port to downstream devices. It can also be powered from an external source if you need 500 mA to downstream devices. The UHR304, our isolated four port hub, and both the isolated and non-isolated seven port hubs, require external power. External 10 to 30 VDC can be provided through the removable terminal block connection or a handy threaded barrel plug if you desire our wall transformer power supply. The external power supplies are sold separately. Review the accessories tab for more information.

All of our industrial grade hubs include a mounting accessory package that includes a DIN Rail Clip for attaching to a standard 35mm DIN Rail. It also includes mounting brackets that can be used to mount the hubs to any flat surface.



InterfaceStandards: USB 1.1 & 2.0
Upstream Port: (1) Type B Female – High Retention
Downstream Port: (4) or (7) Type A Female – High Retention
• 12 Mbps – Model UHR304, UHR307
• 480 Mbps – Model UHR204, UHR207
ESD: 15 kV Air, 8 kV Contact (all models)
Isolation: 4 kV – Upstream to Downstream (UHR304 and UHR307 only)
High Retention: USB Ports require 15 N (3.4 lbs-force) withdrawal force using standard USB Cable


ElectricalModel UHR204 may be bus powered (with limitation on power supplied to peripherals)
Other models must be external powered
Power Connector: Terminal Block or threaded barrel jack
Input Voltage: 10 to 30 VDC
Power Draw:
UHR204 – 16 Watts (External Source)
UHR304 – 16 Watts (External Source)
UHR207 & UHR307 – 30Watts (External Source)
MechanicalFour port models: 13.9 x 8.7 x 3.5 cm (5.5 x 3.5 x 1.4 in)
Seven port models: 20.3 x 12.1 x 3.49 cm (8 x 4.75 x 1.38 in)
SoftwareTransparent to any OS which supports USB
TemperatureTemperature range (operation): -40 to +80°C
Temperature range (storage): -40 to +85°C
Humidity0 to 95% Non-condensing
Weight1.4 lbs – 0.64 kilograms
VibrationIEC60068-2-6 (Vibration) 140-500 Hz, 4G, 3 axes
ShockIEC60068-2-27 (Shock) 50G Peak, 11 ms, 3 axes
MTBFMTBF UHR204 - 211,773 Hours
MTBF UHR304 - 190,999 Hours
MTBF UHR307 - 143330 Hours
MTBF UHR207 - 151173 Hours
Safety/CertificationFCC Class B, CISPR Class B (EN55022)
EN61000-6-2:2005 (Heavy Industrial)
EN61000-4-2:2008 (ESD) +/- 8kV contact, +/-15 kV air
EN61000-4-3:2006 (RI) 10 V/m, 80-1000 Mhz; 3 V/m 1.3 to 2.7 GHz
EN61000-4-4:2004 (EFT Burst) +/- 2kV DC ports; +/- 1 kV signal ports
EN61000-4-5:2005 (Surge) +/- 2 kV com; +/- 1 kV differential
EN61000-4-6:2008 (CI) 10 Vrms, 0.15 to 80 MHz
EN61000-4-8:2001 (Magnetic) 10 A/m, 50 Hz & 60 Hz

Ordering Details

BoardUHR204 USB 4 Port Non-Isolated USB Hub
UHR304 USB 4 Port Isolated Hub

UHR207 7 Port Non-Isolated USB Hub
UHR307 7 Port Isolated USB Hub
AccessoriesPS12VLB-INT-MED Power Supply 12Vdc, Medical Grade - Us, Eu, Uk
MDR-20-24 DIN rail mount power supply 24VDC, 1.0 A output power
USBAMBM-15F Type A Male To Type B Male 15 Foot
USBAMBM-3F Type A Male to Type B Male, 3 foot (Grey)
USBAMBM-6F Type A Male to Type B Male, 6 Foot (Grey)
Order Online B&B Industrial Grade USB 2.0 Hubs - Order Online