I think you might be confusing chaining with some other feature. SATA has always been a point-to-point link, not a multidrop bus. SATA port multipliers are a t

I think you might be confusing chaining with some other feature. SATA has always been a point-to-point link, not a multidrop bus. SATA port multipliers are a thing, but they're active devices with multiple SATA transceivers, not a passive splitter. Support for port multipliers exists in most operating systems.