1. Compliant with USB specification revision 2.0, backward compatible with USB specification revision 1.1
2. Support 4/3/2 downstream ports through I/O pin configuration
3. Upstream port supports high-speed (HS) and full-speed (FS) traffic, downstream port supports HS, FS and low-speed (LS) traffic
4. 1 control pipe (endpoint 0, 64-byte data payload) and 1 interrupt pipe (endpoint 1, 1-byte data payload)
5. On-chip 8-bit microprocessor, RISC-like architecture, USB optimized instruction set
6. Performance: 6 MIPS@12MHz
7. With 64-byte RAM and 2K Mask ROM
8. Support customized PID, VID, and support downstream port configuration by reading external EEPROM
9. Low power consumption, built-in 5V to 3.3V regulator
10. Each downstream port supports two-color status indicators, and its automatic and manual modes are compliant with USB specification revision 2.0
11. Built-in upstream 1.5K pull-up and downstream 15K pull-down
12. Embedded serial resistor for USB signal
13. Supports separate and joint modes of power management and overcurrent detection of downstream ports
14. Power enable pin supports low/high enable power switch
15. Complies with bus power requirements
16. Automatically switches between self-powered and bus-powered modes
17. Supports composite devices through I/O pin configuration (downstream ports are not removable)
18. Built-in PLL supports external 12MHz crystal/oscillator clock input
19. Improved output driver through slew rate control to reduce EMI, internal power failure detection to recover ESD
20. The number of downstream ports can be configured through GPIO without external EEPROM
21. Application range: independent USB hub, PC motherboard USB hub, laptop docking, game console, LCD monitor hub, composite device supporting USB hub function
22. Chip: Genesys GL850

Packing list:
- GL850 independent USB 2.0 hub x 1
- USB2.0 to 4 Pin cable x 1