Quick Start Guide User guide

Conﬁguration Not Required

Additional USB isolation

products from B&B Electronics.

The USB isolator is transparent to the

operating system. It does not require

conﬁguration.

You may use USB cable up to the

standard 5 meter range.

Range and Cable

Downstream Power

The USB isolator can provide up to 400

mA of current to the attached down-

stream device. But it can only do this if

the USB host port is actually providing

the speciﬁed 500 mA (Full Power) to the

isolator.

(Upstream)

USB Device

(Downstream)

USB

Port Guardian

USB Speed Isolation

UH401

Full (12 Mbps)

4 kV

UH401-SL

Low (1.5 Mbps)

4 kV

UH401-2KV

Full (12 Mbps)

2 kV

UH401SL-2KV

Low (1.5 Mbps)

2 kV

PAGE 1
PC (Upstream) USB Port Guardian Configuration Not Required The USB isolator is transparent to the operating system. It does not require configuration. Range and Cable You may use USB cable up to the standard 5 meter range. Downstream Power The USB isolator can provide up to 400 mA of current to the attached downstream device. But it can only do this if the USB host port is actually providing the specified 500 mA (Full Power) to the isolator.
PAGE 2
Troubleshooting Recommended Accessories USB Power Manufacturers don’t always adhere to the USB specifications. You may discover that your computer/host is not providing the full 500 mA at the upstream USB port. If your downstream device relies upon USB power it may not function correctly.