4 Sub 2.0 Ports For Easy Expansion Supports A High-speed Data Transfer Rate Plug & Play hot Swappable Backward Compatible With Sub 1.1. Specifications Leeds Allow For Easy Status Monitoring 4 USB 2.0 ports for easy expansion Supports a high-speed data transfer rate Plug-n-Play hot swappable Backward compatible with USB 1.1 specifcations LEDs allow for easy status monitoring 4 USB 2.0 ports for easy expansion Supports a high-speed data transfer rate Plug-n-Play hot swappable Backward compatible with USB 1.1 specifcations LEDs allow for easy status monitoring