SIIG JU-H40A11-S1 USB 3.0 Super Speed 4 Port Portable Hub (Black) Lightweight Compact Bus powered for Laptop Desktop EXPAND CONNECTIVITY - Instantly expand more USB connectivity by up to 4 ports to your device. (USB 3.0 recommended) MULTI-BANDWIDTH COMPLIANCE - USB 3.0 compliant, also backward compatible with USB 2.0 and USB 1.1 devices. Syncs simultaneously with multiple USB 3.0/2.0/1.1 devices. LIGHTNING SPEED - Syncs your devices with an ultra-fast data transfer rate of up to 5Gb/s with USB 3.0. Built-in MTT function to guarantee Full-Speed (FS) data passing bandwidth when multiple FS devices simultaneously perform heavy loading operations. ULTRA COMPACT - Sleek and compact design, great size to minimize spread out across workspace. Ultra lightweight for transport. USER FRIENDLY - Plug and play, no driver installation is needed. Bus powered to minimize cable clutter, no external power required.