Available for immediate purchase. 4-port USB 3.0 hub, compact design by ELECOM. - Brand: ELECOM - Number of ports: 4 ports - Model name: U3H-A422BX - Color: Black - Connection type: USB 3.0 Body size: 9.7/100/28 Body weight: 26g Number of ports: 4 ports Type: USB Type-A Supported OS: Windows 10, 8.1, 7 (SP1) / macOS High Sierra (10.13) Product name: U3H-A422BX-BK USB Hub Black [Bus power / 4 ports / USB3.0 compatible] Model number: U3HA422BXBK Manufacturer: ELECOM Product code: 4980519 Manufacturer's suggested retail price: ¥2,904 (tax included) Color: Black Manufacturer: ■ Interface: USB3.0 (When connected to a USB2.0 interface, it operates as USB2.0 compatible, and when connected to a USB1.1 interface, it operates as USB1.1 compatible) ■ Connector shape: PC side (upstream port): USB A (male) x 1, USB device side (downstream port): USB A (female) x 4 ■ Supported OS: Windows 10, 8.1, 7 (SP1) / macOS High Sierra (10.13) * Updates to the latest versions of each OS and installation of service packs may be required. ■ Maximum transfer speed: USB3.0 SuperSpeed / 5Gbps (theoretical value), USB2.0 High Speed / 480Mbps (theoretical value), USB1.1 Full Speed 12Mbps (theoretical value) ■ Upstream (PC side) port count: 1 ■ Downstream (peripheral device side) port count: 4 ■ USB cable type: USB3.0 ■ USB cable length: Approximately 7.0cm (excluding connector) ■ Power supply method: Bus power ■ Available current supply: USB3.0 connection: within 720mA total for 4 ports (less than 180mA for each port), USB2.0 connection: within 400mA total for 4 ports (less than 100mA for each port) ■ Color: Black ■ External dimensions: Approximately width 100.0 x depth 28.0 x height 9.7mm (excluding cable) ■ Weight: Approximately 26.0g ■ Operating environment: Temperature 5-40℃, humidity 30-80% (no condensation) Thank you for viewing.