. Description
Do you want your cup to runneth over with USB ports? Do you want it to also be filled with the sweet, sweet nectar of an on-off switch? If the answer to either of those questions is yes - or "I never really thought about it that way but I guess so" - then this is the perfect product for you!
This USB hub has four USB 2.0 ports each with a max total transmission speed up to 480 MBps. All four ports are powered through the standard USB cable. There's also a single on-off switch that controls the four USB ports. There is a 1.35mm DC port for an external power supply but its connected directly to the 5V line so if you need to externally power, we recommend prying open the case and cutting the red 5V line from the USB connection.
These are great for expanding your BeagleBone Black, Pi A+ or other single-board-computer's USB capability to add a bunch of ports. It's also great for giving your laptop or computer a few more plug-in options.
FEATURES
? Fully compliant with Universal Serial Bus
Specification Revision 2.0 (USB 2.0);
? Upstream facing port supports HighSpeed (480MHz) and Full-Speed
(12MHz) modes;
? 4 downstream facing ports support
High-Speed (480MHz), Full-Speed
(12MHz), and Low-Speed (1.5MHz)
modes;
? Integrated USB 2.0 Transceivers;
? Integrated upstream 1.5K? pull-up,
downstream 15K? pull-down, and serial
resisters;
? Integrated 5V to 3.3V and 1.8V regulator.
? Integrated Power-On-Reset circuit;
? Integrated 12MHz Oscillator with feedback
resister, and crystal load capacitance;
? Integrated 12MHz-to-480MHz Phase Lock
Loop (PLL);
? Single Transaction Translator (STT) –
? One TT for all downstream ports;
? The TT could handle 64 periodic StartSplit transactions, 32 periodic
Complete-Split transactions, and 6
none-periodic transactions;
? Automatic self-power status monitoring;
? Automatic re-enumeration when Self
Powered switching to Bus-Powered;
? Ganged Power Control and Global OverCurrent Detection support;
? EEPROM configured options –
? Vendor ID, Product ID, & Device
Release Number; and
? Number of Downstream Ports;
? Comprehensive Port Indicators support:
? Downstream Port Enabled indicator
LED (x4, Green);
? Hub Active/Suspend indicator LED.
