This is a Thunderbolt 4 hub. Using a single Thunderbolt 4 cable, you can connect multiple devices, video, Ethernet, etc. It can also power your PC. (Requires the PC to support Thunderbolt 4.) Front Ports: ・USB-C 3.1 ・3.5mm Earphone Jack ・SD Card Slot ・PC Connection Port (Thunderbolt) Rear Ports: ・HDMI x2 ・Thunderbolt ・USB-A (3.1) x2 ・USB-A (2.0) x2 ・AC Adapter ・LAN ■Included: ・AC Adapter ・Thunderbolt 4 Cable (80cm) (No box or manual) Please check the following for detailed specifications: https://www.belkin.com/jp/p/pro-thunderbolt-4%E3%83%89%E3%83%83%E3%82%AF/INC006qcSGY.html Although there is no manual, a user guide is available on the following site: https://www.belkin.com/jp/support-article?articleNum=318637