Planet Technology Computer Drive UH 421 User Manual

UH-421/  
UH-430  
4-Port USB 2.0 External Hub  
Key Feature  
USB (Universal Serial Bus) 2.0 specification compatibility  
4 USB 2.0 ports up to 100mA per port or up to 500mA (with  
power adapter)  
Real time auto-detect the device add or remove from USB port  
The major goals of developing USB interface are easy to use and low cost.  
This is also why USB 1.1 enjoys great success in marketplace. USB 2.0 is an  
improvement of USB 1.1 specification, which providing higher  
performance interface. PLANET now proudly announces our USB 2.0  
products, the UH-421 and UH-430.  
Supports over current protection  
Supports both high-speed (480Mbps), full-speed (12Mbps) and  
low-speed (1.5Mbps) transfer rate  
The UH-421 / UH-430 is an external USB 2.0 hub. No driver needed, it can  
apply to PCs that run in Windows 98/ 98SE / Me / 2000/ XP / Server 2003  
and Mac operating system. Both of they are bus-powered. PLANET UH-421  
is also supported self-powered, in other words, it is able to gain power  
from high power devices or from its own power supply.  
Truly Plug & Play automatic system configuration  
Chains up to 127 USB devices  
USB and ACPI compliant  
The UH-421 has 1 Type-B upstream port and 4 Type-A downstream ports,  
and UH-430 offers 4 Type-A ports. All these ports can handle high-speed,  
full speed, and low-speed data rate. UH-421 and UH-430 both can  
connect with 127 USB 1.1 or 2.0 devices with plug and play function.  
PLANET USB 2.0 family is the ideal way to make use of USB 2.0  
technology.  
Bus-powered or self-powered  
Supports extra power adapter (UH-421)  
Data Sheet  
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