I have two boards of the PR8-24 marked with MCP23008 & I2CR8G5V1. They are REV B.
I installed AnyI2C onto my Windows 10 Dell Laptop and I cannot find the device. I have confirmed that the COM4 is the correct port and I have talked with other serial devices using this computer, those had FTDI chips and so I have up to date drivers.
When pressing ‘Scan’, it takes more than a minute to respond and there are no devices found.
I have the Address on the board set to 0x20 (default) with none of the jumpers connected.