HE280A( USB to Audio) 1. USB5.1 Channel Audio Adapter 2. Hot plug and play 3. Multi-channel, achieve anology Stereo5.1-channel sound effects 4. Available stereo mixed music effects, Karaoke function 5. 16 rhythm modes for selection 6. 23 enviroment sound effects for selection 7. Dynamic surrond background sound effect HE700(USB1.1 7 ports HUB) 1. Compliant with USB 1.1, Backwardly compatible with USB2.0 2. Plug and play 3. Add 7 USB 1.1 Full-speed ports 4. Supports up to 127 full-speed or low-speed devices 5. Over-current detection and protection 6. Supports Windows 98, 98SE, 2000, ME, XP, Mac OS 9.x, 10.x. HE702(USB2.0 7 ports HUB) HE502(USB2.0)/HE500(USB1.1) 1.USB 2.0( up to 480mops)/USB1.1, Backwards compatible with USB 1.1(12mps)/USB2.0 2.Plug and play installation 3.Supports 5 USB2.0 /USB1.1 Full-speed ports 4.Supports up to 127 devices 5.Over-current detection and protection 6.Supports Windows 98, 98SE, 2000, ME, XP,Vista, Mac OS 9.x, 10.x. HE400MG(USB2.0 4 ports HUB) 1. Fully compliant with USB 2.0 specifications, Backwardly compatible with USB1.1 2. Plug and play 3. Supports data transfer rate at 1.5/12/480Mbps 4. Adds 4 USB 2.0 high-speed ports 5. User-friendly and ergonomic design 6. Supports up to 127 devices 7. Over-current detection and protection 8. Supports Windows 98, 98SE, 2000, ME, XP, Mac OS 9.x, 10.x. HE400M ( USB1.1 4 ports HUB) HE400N (USB1.1 4 ports HUB) 1. Compliant with USB 1.1, Backwardly compatible with USB2.0 2. Plug and play 3. Add 4 USB 1.1 Full-speed ports 4. Supports up to 127 full-speed or low-speed devices 5. Over-current detection and protection 6. Supports Windows 98, 98SE, 2000, ME, XP, Mac OS 9.x, 10.x.