This is a Type-C docking station made by Yottamaster. Product Description: This is a USB3.2Gen2 Type-C docking station. It's an 8-in-1 docking station with 3 USB Type-A ports, 1 USB Type-C port, 1 HDMI port, 1 RJ45 port for wired LAN, 1 SD/MicroSD port, and 1 M.2 SSD slot. It's used to expand the interface/capacity of a laptop. Please connect it to the USB Type-C port on your PC. If you don't have a Type-C port, you can purchase a separate Type-A to Type-C adapter. With a USB3.2Gen2 connection, you can achieve a maximum data transfer speed of 10Gbps. Regarding the M.2 SSD slot, I haven't confirmed its operation because I don't have an M.2 SSD, but it's recognized as "USB4 Mass Storage Device" in the PC's device manager. The maximum capacity of the M.2 SSD is up to 4TB, and the transfer speed depends on the host connection, with a maximum of 10Gbps (as stated on the packaging). The M.2 SSD slot can be accessed by lifting the black lid on the top of the unit; the lid is attached with magnets. Also, this product has a built-in cooling fan, so in my environment, it didn't stop due to heat generated by use. The interfaces are as follows: PC Connection Type-C // PC-IN, Power Type-C // PD100W Type-C // 10Gbps x1 USB Type-A // USB3.2Gen2 10Gbps x1 USB Type-A // USB3.0 5Gbps x2 LAN RJ45 // 1000Mbps x1 HDMI // 4K60Hz x1 SD Card Reader // 90MB/s x1 Micro SD Card Reader // 90MB/s x1 M.2 SSD Slot // Max 4TB Accessories include: ・Instruction manual ・USB Type-c to Type-c for PC connection ・M.2 SSD base plate/heatsink ・M.2 SSD thermal conductive sheet ・M.2 SSD fixing pins x3 ・Carrying case (with scratches)