What does slots and SATA ports share the bandwidth mean?

2 slot B Key Adapter to SATA hdd - Di-ARTs Technology sata 3 slot SATA Connectors · SATA Data Connectors A SATA data connector has 7 horizontal pins, four pins arranged in two pairs for data and 3 ground pins One end (the end sata 3 slot 2 slot and your SSD is to read the respective product 2 SATA SSDs perform up to SATA III speeds ; the same as

sata slot Supports SATA III II I Transfer Rate up to 6Gbps Full range size 2280, 2260, 2242 of