Sipeedo have released a PCIe based NanoKVM with low profile support
https://sipeed.com/nanokvm/pcie and https://sipeed.com/nanokvm
I got my NanoKVM yesterday after being on preorder for some time, and I must admit, it runs as good as a PiKVM but h.264 is kind of flaky atm but MJPEG is working fine over LAN, it still has issues from some BIOSes with the HID not working when virtual CDROM is enabled
for the pricing of this it is a really great alternative to a PiKVM