Hi Radxa & community,
I am trying to read up on the documentation of the Rock5 e.g. from this document Introduce ROCK 5 Model B - ARM Desktop level SBC - ROCK 5 - Radxa Forum and Rock5/hardware/5b - Radxa Wiki, to understand where the RK3588’s PCIe lanes go.
On the bottom of the SBC is a M.2 M key 22x80mm slot. A NVMe SSD any other fitting PCIe peripheral would fit here. How many PCIe lanes does it get?
On the top of the SBC is a M.2 E key, that one is 22x42mm is it? How many PCIe lanes does it get?
Finally do any more PCIe lanes go to any other chips on the SBC?
I would hope it’s 2x lanes to the lower M.2 + 2x lanes to the upper M.2. If I understood it right, the USB3 controller is built-in in the SoC so the USB3 consumes no PCIe lanes.
Looking forward to your confirmation. Thanks!