Modern hard drives are usually connected via SATA III internally or USB 3.0 ports externally and these connection methods are ideal for Burstcoin mining. SATA is limited to one device per port, but USB 3.0 allows you to daisy-chain multiple drives from one port using a USB hub or similar device. However, be aware that you can quickly saturate the USB 3.0 controller by connecting too many drives, which will then slow down your scan times for each round (that's bad). Both SATA III and USB 3.0 expansion cards can also be added via the PCI-e bus to add even more drives to your system.
USB 3.1 Gen 2 roughly doubles the bandwidth of USB 3.0, but it is not widely adopted yet. USB 2.0 is far too slow for mining, unfortunately.
Typically, several USB ports are connected to the same controller on the motherboard or PCIe card to which they are mounted. As a rule of thumb, connect no more than seven 5 TB or four 8 TB drives per USB 3.0 controller to avoid bottlenecks.
- SATA III or eSATA is limited to one drive per controller.
Maximum speed: 750 MB/s (6 Gbps).
- USB 3.0 can handle multiple drives per controller.
Maximum speed: 640 MB/s (5 Gbps).
- USB 3.1 Gen 2 can handle multiple drives per controller.
Maximum speed: 1280 MB/s (10 Gpbs).