Hi there,
So an interesting one, which I've tried googling, no answers.
I have USB Risers, 006C
3 ASUS STRIX 8Gb 580 Cards
Asrock 990FX Extreme4 with 16Gb.
Running EthOS on eth.nanopool
Two cards running on the board in full slots, 100% uptime, superb.
When I plug in the USB Riser and attach a 580 GPU, I give power to the Riser itself straight to the PSU as I've heard of issues/melting cables using the SATA adapters. I take power from a PCI-E 8 pin to the white six pin (non-molex version) connector on the Riser. USB cable then obviously going to the PCI adapter mini card, on to a PCI-E 1x small connector on the mobo. The GPU also gets its 4 pin connector for power.
On starting, it will spin up everything and the cards pulse their fancy LED lighting, including the Riser-based card, but video will not show. I've had this from the start with these risers, and have tried them all, same result. What really spooked me was the smell of heating plastic, and on doing a light touch test, nearly melted my finger when I touched the USB cable to the mobo! It was blazing hot, so I quickly disconnected the power supply unit and rechecked the 580 in a full slot, all good (phew!).
I am thinking its mobo-based (is it trying to send power UP the USB cable rather than acting as a data line?) but wanted to ask experts here what their views where on the USB cable heating up so much? I've tried two Risers and still can't get post.
Thanks so much for your time.
Jax
So an interesting one, which I've tried googling, no answers.
I have USB Risers, 006C
3 ASUS STRIX 8Gb 580 Cards
Asrock 990FX Extreme4 with 16Gb.
Running EthOS on eth.nanopool
Two cards running on the board in full slots, 100% uptime, superb.
When I plug in the USB Riser and attach a 580 GPU, I give power to the Riser itself straight to the PSU as I've heard of issues/melting cables using the SATA adapters. I take power from a PCI-E 8 pin to the white six pin (non-molex version) connector on the Riser. USB cable then obviously going to the PCI adapter mini card, on to a PCI-E 1x small connector on the mobo. The GPU also gets its 4 pin connector for power.
On starting, it will spin up everything and the cards pulse their fancy LED lighting, including the Riser-based card, but video will not show. I've had this from the start with these risers, and have tried them all, same result. What really spooked me was the smell of heating plastic, and on doing a light touch test, nearly melted my finger when I touched the USB cable to the mobo! It was blazing hot, so I quickly disconnected the power supply unit and rechecked the 580 in a full slot, all good (phew!).
I am thinking its mobo-based (is it trying to send power UP the USB cable rather than acting as a data line?) but wanted to ask experts here what their views where on the USB cable heating up so much? I've tried two Risers and still can't get post.
Thanks so much for your time.
Jax