![]() ![]() USB 3.0 extension cable is 60cm long, provides enough flexibility for PCI-e devices placement.Ideal for 24/7 non-stop working environment This PCI-E riser card has 4 high quality Solid Capacitors, Voltage Regulation, and Overcurrent Protection to provide reliable and stable performance and long lifespan.It reduces power burden on motherboard and ensures compatibility with power supply unit (PSU), especially high capacity PSU 6-pin PCI-E power to 15-pin SATA power cable is the best among all types of power connections.The #1 popular solution for Ethereum mining rigs or Bitcoin Mining Riser Card (Riser Adapter) fits PCI-E 16x, 8x, 4x, 1x slots.So they can handle 10A for a few seconds through contacts and wire that aren't rated for 10A, but it's not a good idea to go over that 5A value for continuous operation which is something that could definitely happen if you have more than 4-5 hard drives in a string.(59) Rosewill RCRC-17001 Mining Card, Riser Card, PCIe (PCI Express) 16x to 1x Riser Adapter, USB 3.0 Extension Cable 60cm, 6 pin PCI-E to SATA Power Cable, GPU Riser Adapter, Ethereum Mining Riser Card Each sata connector is rated even lower at 4.5A but overall the wire connecting all connectors can carry around 8-10A.īoth connectors are rated to allow a bit more current for those few seconds when all hard drives start at the same time. after it turns on the current is lower, usually less than 1A for each drive.Īn old molex connector is only rated for 5A for contact by the guys that made the ATX standard (in reality, the connector and contacts can do 8A but 5A is very safe). for example the 10th hard drive on a strip may "see" only 11.6v instead of 12v.Īlso, hard drives tend to use much higher current when they start (spin up their platters) due to inertia, friction and other things, so it's not uncommon for a hard drive to -let's say - pull up to 2A of current from 12v for a few seconds when it turns on. The furthest away from the power supply will see slightly lower voltage. the not too many devices on one strip is not so much about balancing but for safety and for minimal voltage drop on the cables and in connectors. Usually, it's not a problem, even some of the lowest power good power supply (in the 360-420w range) can output up to 14-16 A on 5v) The motherboard probably uses 3-5A of current on 5v as well, so your power supply should have at least 10A of current on 5v to safely/reliably power all those drives. ![]() With 5 drives, it's safe to go with 5 A of current on 5v for your hard drives. Most mechanical drives use between 0.5 A and 1A of current on 5v to power the electronics on the circuit board, and around 0.5A on 12v to power the motor which spins the platters. You shouldn't connect more than 4 hard drives in a string (to one connector coming from the power supply, whatever that may be)Īlso, you should pay attention to how much current the power supply can supply, especially on 5v. There are even some more expensive adapters which have one pci-e 6 pin connector on one end and have a DC-DC converter on the cable to create the 5v required by the hard drives, besides the already existing 12v. You can buy molex (old hdd connector) to 2-3 x SATA ![]()
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